# LASER

![Product image](https://novapart.co/image/farnell:4459189/)

**URL**: https://novapart.co/products/Q4XFPCOD310-Q8/laser
**SKU**: Q4XFPCOD310-Q8
**Manufacturer**: BANNER ENGINEERING
**Price**: €398.4000
**Stock**: 10+
**Lead Time**: 58 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (23-Jan-2024) |
| Product Range | Q4X Series |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4459189/)

Q4X Stainless Steel Laser Sensor for Clear Object Detection Quick Start Guide 

## Product Description 

Class 1 laser CMOS sensor with a discrete (PNP or NPN) output. Patent pending. 

This guide is designed to help you set up and install the Q4X Sensor. For complete information on programming, performance, troubleshooting, dimensions, and accessories, please refer to the Product Manual at www.bannerengineering.com. Search for part number 181483 to view the Product Manual. Use of this document assumes familiarity with pertinent industry standards and practices. 

For illustration purposes, the threaded barrel model Q4X images are used throughout this document. 

## WARNING: 

- Do not use this device for personnel protection 

- Using this device for personnel protection could result in serious injury or death. 

- This device does not include the self-checking redundant circuitry necessary to allow its use in personnel safety applications. A device failure or malfunction can cause either an energized (on) or de-energized (off) output condition. 

## Features 

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Sensor Features—Threaded Barrel Models<br>1<br>2<br>@ 3<br>**----- End of picture text -----**<br>


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Sensor Features—Flush Mount Models<br>1<br>2<br>1. Output Indicator (Amber)<br>2. Display<br>3. Buttons @ 3<br>**----- End of picture text -----**<br>


## Display and Indicators 

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Display in Run Mode<br>1 2<br>**----- End of picture text -----**<br>


The display is a 4-digit, 7-segment LED. The main screen is the Run Mode screen, which shows the percentage matched to the taught reference surface. A display value of 999P indicates the sensor has not been taught. 

1. Stability Indicator (STB = Green) 

2. Active TEACH Indicators ◦ COD = Intensity and distance windows for clear object detection 

## Output Indicator 

- On—Outputs conducting (closed) 

- Off—Outputs not conducting (open) 

## Active TEACH Indicators (COD) 

- COD all on = Intensity and distance windows for clear object detection enabled 

## Stability Indicator (STB) 

- On—Stable signal within the specified sensing range 

- Flashing—Marginal signal, the target is outside the limits of the specified sensing range, or a multiple peak condition exists 

- Off—No target detected within the specified sensing range 

Original Instructions 24-Jul-25 

© Banner Engineering Corp. All rights reserved. www.bannerengineering.com 

p/n: 187731 Rev. E 

Q4X Stainless Steel Laser Sensor for Clear Object Detection Quick Start Guide 

## Buttons 

Use the sensor buttons (SELECT)(TEACH) , (+)(LO/DO) , and (-)(MODE) to program the sensor. 

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Buttons<br>**----- End of picture text -----**<br>


## (SELECT)(TEACH) 

- Press to select menu items in Setup mode 

- • Press and hold for longer than 2 seconds to start the Clear Object Detection TEACH mode 

(-)(MODE) 

- Press to navigate the sensor menu in Setup mode 

- • Press to change setting values; press and hold to decrease numeric values 

## (+)(LO/DO) 

   - Press to navigate the sensor menu in Setup mode 

   - Press to change setting values; press and hold to increase numeric values 

   - Press and hold for longer than 2 seconds to switch between light operate (LO) and dark operate (DO) 

- Press and hold for longer than 2 seconds to enter Setup mode 

NOTE: When navigating the menu, the menu items loop. 

## Installation 

## Install the Safety Label 

The safety label must be installed on Q4X sensors that are used in the United States. 

NOTE: Position the label on the cable in a location that has minimal chemical exposure. 

1. Remove the protective cover from the adhesive on the label. 

2. Wrap the label around the Q4X cable, as shown. 

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Safety Label Installation<br>— ory] oy-__—<br>COMPLIES WITH IEC 60825-1:2007<br>**----- End of picture text -----**<br>


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COMPLIES WITH IEC 60825-1:2007<br>**----- End of picture text -----**<br>


3. Press the two halves of the label together. 

## Sensor Orientation and Mounting Considerations for Transparent and Clear Object Detection 

Optimize the reliable detection of transparent and clear objects by applying these principals when selecting your reference surface, positioning your sensor relative to the reference surface, and presenting your target. The robust detection capabilities of the Q4X will allow successful detection even under non-ideal conditions in many cases. 

1. Select a reference surface with these characteristics where possible: 

   - Matte or diffuse surface finish 

   - Fixed surface with no vibration 

   - Dry surface with no build-up of oil, water, or dust 

2. Position the reference surface between 50 and 300 mm (threaded barrel models) or 60 mm and 310 mm (flush mount models). 

3. Position the target to be detected as close to the sensor as possible, and as far away from the reference surface as possible. 

4. Angle the sensing beam relative to the target and relative to the reference surface 10 degrees or more. 

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Q4X Stainless Steel Laser Sensor for Clear Object Detection Quick Start Guide 

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Mounting considerations<br>Reference Surface as possible<br>Separate as far as possible<br>\<br>\<br>10° or more<br>\eo Up to the maximum sensing distance<br>**----- End of picture text -----**<br>


## _Common problems and solutions for detecting clear objects_ 

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PROBLEM: SOLUTION:<br>The object is close to the reference surface Move the target closer to the sensor<br>**----- End of picture text -----**<br>


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PROBLEM:<br>**----- End of picture text -----**<br>


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The sensor is far from the object<br>**----- End of picture text -----**<br>


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SOLUTION:<br>Move the sensor closer to the target<br>**----- End of picture text -----**<br>


## Mount the Device 

1. If a bracket is needed, mount the device onto the bracket. 

2. Mount the device (or the device and the bracket) to the machine or equipment at the desired location. Do not tighten the mounting screws at this time. 

3. Check the device alignment. 

4. Tighten the mounting screws to secure the device (or the device and the bracket) in the aligned position. 

© Banner Engineering Corp. All rights reserved. www.bannerengineering.com 

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Q4X Stainless Steel Laser Sensor for Clear Object Detection Quick Start Guide 

## Wiring Diagram —Threaded Barrel Models 

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bn (1) + 1<br>10-30 V DC<br>bu (3) – 2<br>wh (2)<br>Load 4<br>bk (4) Load 3 5<br>gy (5) Remote Key<br>TEACH 1 = Brown<br>2 = White<br>3 = Blue<br>4 = Black<br>5 = Gray<br>**----- End of picture text -----**<br>


NOTE: Open lead wires must be connected to a terminal block. 

NOTE: The input wire function is user-selectable; see the Instruction Manual for details. The default for the input wire function is off (disabled). 

## Wiring Diagram—Flush Mount Models 

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NPN Models PNP Models<br>1<br>bn (1) bn (1) : 2<br>10-30 V DC bu (3) 10–30 V DC 4<br>bu (3)<br>3<br>bk (4) bk (4) Load Key<br>Load<br>wh (2) Input Wire 1 = Brown<br>wh (2) Input Wire 2 = White<br>3 = Blue<br>4 = Black<br>**----- End of picture text -----**<br>


NOTE: Open lead wires must be connected to a terminal block. 

NOTE: The input wire function is user-selectable; see the Instruction Manual for details. The default for the input wire function is off (disabled). 

## Clean Sensor with Compressed Air and Water 

Handle the sensor with care during installation and operation. Sensor windows soiled by fingerprints, dust, water, oil, etc. create stray light that may degrade the peak performance of the sensor. 

Blow the window clear using filtered, compressed air, then clean as necessary using only water and a lint-free cloth. Do not use any other chemicals for cleaning. 

## Sensor Programming 

Program the sensor using the buttons on the sensor or the remote input (limited programming options). 

In addition to programming the sensor, use the remote input to disable the buttons for security, preventing unauthorized or accidental programming changes. See the Instruction Manual, p/n 181483 for more information. 

## Setup Mode 

Access Setup mode and the sensor menu from Run mode by pressing and holding MODE for longer than 2 seconds. Use and to navigate through the menu. Press SELECT to select a menu option and access the submenus. Use and to navigate through the 

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Q4X Stainless Steel Laser Sensor for Clear Object Detection Quick Start Guide 

submenus. Press SELECT to select a submenu option and return to the top menu, or press and hold SELECT for longer than 2 seconds to select a submenu option and return immediately to Run mode. 

To exit Setup mode and return to Run mode, navigate to 

## and press SELECT . 

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Sensor Menu Map—Channel 1<br>Top Menu Sub Menus<br>Adaptive Tracking Algorithm<br>Adaptive Tracking ON (default setting)<br>Adaptive Tracking OFF<br>High-Speed Adaptive Tracking ON<br>Response Speed<br>set Response Speed to 1.5 ms<br>set Response Speed to 3 ms<br>set Response Speed to 10 ms (default setting)<br>set Response Speed to 25 ms<br>set Response Speed to 50 ms<br>Gain and Sensitivity*<br>high excess gain mode (default setting)<br>standard excess gain with increased noise immunity<br>Gain menu is available when Response Speed is set to 10, 25 or 50 ms<br>Output Timing Delays<br>off: no delays enabled (default setting)<br>enable on and/or off delay (set value in Delay Timer menu)<br>1 Shot, fixed output pulse duration<br>LO = On pulse when a target is detected inside of the switch point(s)<br>Delay Timer DO = On pulse when a target is detected outside of the switch point(s)<br>Available when<br>ms to sec range, set Delay Timer value (seconds have decimal)<br>selected<br>Available when  when            is selected,1 to 9 ms is range available when Response Speed is<br>selected set to 1.5 or 3 ms<br>Input Wire Function<br>off: remote teach input is not active (default setting)<br>set: Remote Teach input<br>laser off when pulled low<br>master<br>slave<br>Display Read<br>display on (default setting)<br>display on, inverted<br>display off (enters sleep mode after 60 seconds)<br>display off, inverted (enters sleep mode after 60 seconds)<br>Exit Setup<br>end: select to exit setup<br>Reset to Factory Defaults<br>no: do not reset to factory defaults<br>yes: reset to factory defaults<br>**----- End of picture text -----**<br>


## Basic TEACH Instructions 

Use the following instructions to teach the Q4X sensor. 

1. Align the sensor to a stable reference surface. 

2. Rigidly mount the sensor in this alignment. 

3. Press and hold TEACH for longer than 2 seconds to start the TEACH mode. 

4. Press TEACH to teach the reference surface. The reference surface is taught, the currently selected switch point value is displayed, and the sensor returns to run mode. 

The Q4X sensor records the distance to the reference surface and the amount of laser light returned by the reference surface. The output is switched when an object passing between the sensor and the reference surface changes the perceived distance or amount of returned light. 

© Banner Engineering Corp. All rights reserved. www.bannerengineering.com 

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Q4X Stainless Steel Laser Sensor for Clear Object Detection Quick Start Guide 

The Q4X is able to detect the very small changes caused by transparent and clear objects. Typical reference surfaces are metal machine frame, conveyor side rail, or mounted plastic targets. Please contact Banner Engineering if you require assistance setting up a stable reference surface in your application. 

The Q4X sensor can be taught non-ideal reference surfaces, such as surfaces outside of the sensor range or very dark surfaces. Teaching non-ideal reference surfaces may enable applications other than transparent or clear object detection, but best results for transparent or clear object detection require a stable reference surface as described above in "Sensor Orientation and Mounting Considerations for Transparent and Clear Object Detection" on page 2. 

## Manual Adjustments 

Manually adjust the sensor switch point using the and buttons. 

   1. From Run mode, press either or one time. The current switch point value flashes slowly. 

2. Press to move the switch point up or to move the switch point down. After 1 second of inactivity, the new switch point value flashes rapidly, the new setting is accepted, and the sensor returns to Run mode. 

After the TEACH process is completed, the taught reference point, a combination of the measured distance and returned signal intensity from the reference target, is recorded by the sensor. Use the push buttons to manually adjust the switch point. Manual adjustment changes 

the sensitivity of the thresholds around the taught reference point but does not move the taught reference point. Press to increase the 

sensitivity and press to decrease the sensitivity. After re-positioning the sensor or changing the reference target, re-teach the sensor. 

The display shows the current match percentage relative to the taught reference point. The switch point defines the sensitivity; the output switches when the current match percentage crosses the switch point. 

Your specific application may require some adjustment of the switch point, but these values are recommended starting switch points for common applications. 

Switch point (%) Typical Applications 75 (default) Default, recommended for PET bottles and Trays 88 Recommended for thin films 50 Recommended for tinted brown, tinted green, or water-filled containers 

## Light Operate/Dark Operate 

The default output configuration is light operate. To switch between light operate and dark operate, use the following instructions: 

1. Press and hold LO/DO for longer than 2 seconds. The current selection displays. 

2. Press LO/DO again. The new selection flashes slowly. 

3. Press SELECT to change the output configuration and return to Run mode. 

NOTE: If neither SELECT nor LO/DO are pressed after step 2, the new selection flashes slowly for a few seconds, then flashes quickly and the sensor automatically changes the output configuration and returns to Run mode. 

## Locking and Unlocking the Sensor Buttons 

Use the lock and unlock feature to prevent unauthorized or accidental programming changes. 

Three settings are available: 

- La[et] ss —The sensor is unlocked and all settings can be modified (default). 

- an as[a] —The sensor is locked and no changes can be made. 

- mon a —The switch point value can be changed by teaching or manual adjustment, but no sensor settings can be changed through 

- the menu. 

When in Loc mode, Loc displays when the (SELECT)(TEACH) button is pressed. The switch point displays when (+)(LO/DO) or (-)(MODE) are pressed, but Loc displays if the buttons are pressed and held. 

When in 0Loc mode, Loc displays when (+)(LO/DO) or (-)(MODE) are pressed and held. To access the manual adjust options, briefly press and release (+)(LO/DO) or (-)(MODE) . To enter TEACH mode, press the (SELECT)(TEACH) button and hold for longer than 2 seconds. 

To enter Loc mode, hold + and press - four times. To enter 0Loc mode, hold + and press - seven times. Holding + and pressing - four times unlocks the sensor from either lock mode and the sensor displays uLoc . 

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Q4X Stainless Steel Laser Sensor for Clear Object Detection Quick Start Guide 

## Q4X Specifications 

Sensing Beam Visible red Class 1 laser, 655 nm 

Supply Voltage (Vcc) 10 V DC to 30 V DC 

Power and Current Consumption, exclusive of load < 675 mW 

Sensing Range 25 mm to 300 mm (0.98 in to 11.81 in) 

Output Configuration Bipolar (1 PNP and 1 NPN) output 

Output Rating 

100 mA total maximum (protected against continuous overload and short circuit) 

Off-state leakage current: < 5 µA at 30 V DC PNP On-state saturation voltage: < 1.5 V DC at 100 mA load NPN On-state saturation voltage: < 1.0 V DC at 100 mA load 

Remote Input 

Allowable Input Voltage Range: 0 to Vcc Active Low (internal weak pullup—sinking current): Low State < 2.0 V at 1 mA max. 

Supply Protection Circuitry 

Protected against reverse polarity and transient overvoltages Delay at Power Up < 750 ms 

Maximum Torque Side mounting: 1 N·m (9 in·lbs) Nose mounting: 20 N·m (177 in·lbs) 

Ambient Light Immunity > 5,000 lux at 300 mm 

Connector Integral 5-pin M12 male quick-disconnect connector 

Construction Housing: 316 L stainless steel Lens cover: PMMA acrylic Lightpipe and display window: polysulfone 

Response Speed User selectable: 

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|||
|---|---|
|•|—1.5 milliseconds|
|•|—3 milliseconds|
|•|—10 milliseconds|
|•|—25 milliseconds|
|•|—50 milliseconds|

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## Chemical Compatibility 

Compatible with commonly used acidic or caustic cleaning and disinfecting chemicals used in equipment cleaning and sanitation. ECOLAB® certified. 

Compatible with typical cutting fluids and lubricating fluids used in machining centers 

Environmental Rating IP67 per IEC60529 IP68 per IEC60529 IP69K per ISO 20653 

IP rating is dependent on proper cordset installation. 

Vibration 

MIL-STD-202G, Method 201A (Vibration: 10 Hz to 60 Hz, 0.06 inch (1.52 mm) double amplitude, 2 hours each along X, Y and Z axes), with device operating Shock 

MIL-STD-202G, Method 213B, Condition I (100G 6x along X, Y, and Z axes, 18 shocks), with device operating 

## Operating Conditions 

–10 °C to +50 °C (+14 °F to +122 °F) 35% to 95% relative humidity 

Storage Temperature 

–25 °C to +75 °C (–13 °F to +167 °F) 

Required Overcurrent Protection 

WARNING: Electrical connections must be made by qualified personnel in accordance with local and national electrical codes and regulations. 

Overcurrent protection is required to be provided by end product application per the supplied table. 

Overcurrent protection may be provided with external fusing or via Current Limiting, Class 2 Power Supply. Supply wiring leads < 24 AWG shall not be spliced. For additional product support, go to www.bannerengineering.com. 

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|||||
|---|---|---|---|
|Supply|Supply|
|Required Overcurrent|Required Overcurrent|
|Wiring|Wiring|
|Protection (A)|Protection (A)|
|(AWG)|(AWG)|
|20|5.0|26|1.0|
|22|3.0|28|0.8|
|24|2.0|30|0.5|

**----- End of picture text -----**<br>


Certifications 

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Banner Engineering BV<br>Park Lane, Culliganlaan 2F bus 3<br>1831 Diegem, BELGIUM<br>Turck Banner LTD Blenheim House<br>Blenheim Court<br>Wickford, Essex SS11 8YT<br>GREAT BRITAIN<br>**----- End of picture text -----**<br>


**Industrial Control Equipment 3TJJ** 

Class 2 power; UL Environmental Rating: Type 1 

## Application Note 

For optimum performance, allow 10 minutes for the sensor to warm up 

chemical compatibility certified ECOLAB is a registered trademark of Ecolab USA Inc. All rights reserved. 

© Banner Engineering Corp. All rights reserved. www.bannerengineering.com 

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Q4X Stainless Steel Laser Sensor for Clear Object Detection Quick Start Guide 

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 Threaded Barrel Models Excess Gain ( ceo3000  Excess Gain [(1)] )<br>Excess Gain—90% White Card<br>Response Speed (ms)<br>at 25 mm at 300 mm<br>1.5 200 20<br>3 200 20<br>10 1000 (500) 100 (50)<br>25 2500 (1000) 250 (100)<br>50 5000 (2500) 500 (250)<br> Flush Mount Models Excess Gain ( cra0  Excess Gain [(2)] )<br>Excess Gain—90% White Card<br>Response Speed (ms)<br>at 35 mm at 310 mm<br>1.5 200 20<br>3 200 20<br>10 1000 (500) 100 (50)<br>25 2500 (1000) 250 (100)<br>50 5000 (2500) 500 (250)<br>**----- End of picture text -----**<br>


## Class 1 Laser Description and Safety Information 

> Laser light. Do not stare into the beam. **CLASS 1 LASER PRODUCT** Complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 56, dated May 8, 2019. 

## CAUTION: 

- Never stare directly into the sensor lens. 

- • Laser light can damage your eyes. • Avoid placing any mirror-like object in the beam. Never use a mirror as a retroreflective target. 

## CAUTION: 

- Return defective units to the manufacturer. 

- • Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. 

- • Do not attempt to disassemble this sensor for repair. A defective unit must be returned to the manufacturer. 

Class 1 lasers are lasers that are safe under reasonably foreseeable conditions of operation, including the use of optical instruments for intrabeam viewing. 

Complies with IEC 60825-1:2014 and EN 60825-1:2014+A11:2021. 

For safe laser use: 

- Do not stare at the laser. 

- Do not point the laser at a person’s eye. 

- • Mount open laser beam paths either above or below eye level, where practical. • Terminate the beam emitted by the laser product at the end of its useful path. 

(1) 

   - a excess gain available in 10 ms, 25 ms, and 50 ms response speeds only 

   - 200 excess gain provides increased noise immunity 

- (2) 

- ae excess gain available in 10 ms, 25 ms, and 50 ms response speeds only 

- het excess gain provides increased noise immunity 

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Q4X Stainless Steel Laser Sensor for Clear Object Detection Quick Start Guide 

## Models with a Range of ≤ 510 mm 

## Class 1 Laser Characteristics 

Output power ≤ 510 mm Models: < 0.20 mW; > 510 mm Models: < 0.39 mW Laser wavelength: 655 nm 

Pulse duration: 7 µs to 2 ms 

## Models with a Range of > 510 mm 

Class 1 Laser Characteristics 

Output power: < 0.39 mW Laser wavelength: 655 nm Pulse duration: 7 µs to 2 ms 

## FCC Part 15 Class B for Unintentional Radiators 

(Part 15.105(b)) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: 

- Reorient or relocate the receiving antenna. 

- Increase the separation between the equipment and receiver. 

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 

- Consult the dealer or an experienced radio/TV technician for help. 

(Part 15.21) Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment. 

## Industry Canada ICES-003(B) 

This device complies with CAN ICES-3 (B)/NMB-3(B). Operation is subject to the following two conditions: 1) This device may not cause harmful interference; and 2) This device must accept any interference received, including interference that may cause undesired operation. 

Cet appareil est conforme à la norme NMB-3(B). Le fonctionnement est soumis aux deux conditions suivantes : (1) ce dispositif ne peut pas occasionner d'interférences, et (2) il doit tolérer toute interférence, y compris celles susceptibles de provoquer un fonctionnement non souhaité du dispositif. 

## Banner Engineering Corp Limited Warranty 

Banner Engineering Corp. warrants its products to be free from defects in material and workmanship for one year following the date of shipment. Banner Engineering Corp. will repair or replace, free of charge, any product of its manufacture which, at the time it is returned to the factory, is found to have been defective during the warranty period. This warranty does not cover damage or liability for misuse, abuse, or the improper application or installation of the Banner product. 

THIS LIMITED WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED (INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), AND WHETHER ARISING UNDER COURSE OF PERFORMANCE, COURSE OF DEALING OR TRADE USAGE. 

This Warranty is exclusive and limited to repair or, at the discretion of Banner Engineering Corp., replacement. IN NO EVENT SHALL BANNER ENGINEERING CORP. BE LIABLE TO BUYER OR ANY OTHER PERSON OR ENTITY FOR ANY EXTRA COSTS, EXPENSES, LOSSES, LOSS OF PROFITS, OR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES RESULTING FROM ANY PRODUCT DEFECT OR FROM THE USE OR INABILITY TO USE THE PRODUCT, WHETHER ARISING IN CONTRACT OR WARRANTY, STATUTE, TORT, STRICT LIABILITY, NEGLIGENCE, OR OTHERWISE. 

Banner Engineering Corp. reserves the right to change, modify or improve the design of the product without assuming any obligations or liabilities relating to any product previously manufactured by Banner Engineering Corp. Any misuse, abuse, or improper application or installation of this product or use of the product for personal protection applications when the product is identified as not intended for such purposes will void the product warranty. Any modifications to this product without prior express approval by Banner Engineering Corp will void the product warranties. All specifications published in this document are subject to change; Banner reserves the right to modify product specifications or update documentation at any time. Specifications and product information in English supersede that which is provided in any other language. For the most recent version of any documentation, refer to: www.bannerengineering.com. 

For patent information, see www.bannerengineering.com/patents. 

© Banner Engineering Corp. All rights reserved. www.bannerengineering.com 

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## Links

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- [Supplier page](https://es.farnell.com/banner-engineering/q4xfpcod310-q8/laser/dp/4459189)
---

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