KT8L-P3756

Contrast Sensor, 150mm, PNP, 100mA, 10 to 30VDC, KT8 Series

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Manufacturer: SICK
Product type:
SVHC: No SVHC (21-Jan-2025)
Photo Current: 100mA
Product Range: KT8 Series
Sensing Range Max: 150mm
Sensor Output Type: PNP
Supply Voltage DC Max: 30V
Supply Voltage DC Min: 10V

Delivery and price
Units per pack	50
Price	839.62 €
Current stock	10+
Lead time	30 days

Datasheet

KT8L-P3756 KT8 

**CONTRAST SENSORS** 

**KT8L-P3756 | KT8** CONTRAST SENSORS 

## Ordering information 

|**Type**|**Part no.**|
|---|---|
|KT8L-P3756|1041351|
|Other models and accessories<br> www.sick.com/KT8<br>|||



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Illustration may differ<br>**----- End of picture text -----**<br>


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CE -@ss<br>**----- End of picture text -----**<br>


## Detailed technical data 

## Features 

|**Dimensions (W x H x D)**|30.4 mm x 53 mm x 80 mm|
|---|---|
|**Sensing distance**|≤ 150 mm1)|
|**Housing design**|Large|
|**Light source**|Laser, red2)|
|**Laser class**|II (EN 60825-1:2014), IEC 60825-1:2014|
|**Wave length**|655 nm|
|**Light emission**|Long side of housing|
|**Light spot size**|Ø 3 mm3)|
|**Light spot direction**|Round|
|**Operating distance**|30 mm ... 600 mm4)|
|**Adjustment**|Teach-in button|
|**Teach-in mode**|Static 2-point teach-in<br>Dynamic teach-in (min/max)|
|**Function**|Automatic drift correction|



- 1) From leading edge of lens. 

- 2) Average service life: 50,000 h at TU = +25 °C. 

- 3) At focal point = sensing distance 150 mm. 

- 4) With respect to black-white contrast 6 % / 90 %. 

## Mechanics/electronics 

|**Supply voltage**|10 V DC ... 30 V DC1)|
|---|---|
|**Ripple**|≤ 5 Vpp 2)|



- 1) Limit values when operated in short-circuit protected network: max. 8 A. 2) May not exceed or fall below Uv tolerances. 

- 3) Without load. 

- 4) With light/dark ratio 1:1. 

- 5) Signal transit time with resistive load. 

- 6) Reference voltage DC 50 V. 

**Product data sheet | 2024-04-15 09:25:50 Subject to change without notice** 

**2 CONTRAST SENSORS | SICK** 

**KT8L-P3756 | KT8** CONTRAST SENSORS 

|**Current consumption**|< 80 mA3)|
|---|---|
|**Switching frequency**|17 kHz4)|
|**Response time**|30 µs5)|
|**Jitter**|< 15 µs|
|**Switching output**|PNP|
|**Switching output (voltage)**|PNP: HIGH = UV≤ 2 V / LOW approx. 0 V|
|**Analog output**|0.3 mA ... 20 mA|
|**Output current Imax.**|100 mA|
|**Input, teach-in (ET)**|PNP<br>Teach: U = 10 V ... < UV<br>Run: U < 2 V|
|**Retention time (ET)**|25 ms, non-volatile memory|
|**Time delay**|20 ms, adjustable|
|**Connection type**|Male connector M12, 5-pin|
|**Protection class**|II6)|
|**Circuit protection**|UVconnections, reverse polarity protected<br>Output Q short-circuit protected<br>Interference pulse suppression|
|**Enclosure rating**|IP67|
|**Weight**|400 g|
|**Housing material**|Metal, zinc diecast|
|**Optics material**|Glass|



1) Limit values when operated in short-circuit protected network: max. 8 A. 

- 2) May not exceed or fall below Uv tolerances. 

- 3) Without load. 

- 4) With light/dark ratio 1:1. 

- 5) Signal transit time with resistive load. 

- 6) Reference voltage DC 50 V. 

## Ambient data 

|**Ambient operating temperature**|–10 °C ... +45 °C|
|---|---|
|**Ambient temperature, storage**|–10 °C ... +75 °C|
|**Shock load**|According to IEC 60068|
|**UL File No.**|242368, CDRH-conform|



## Classifications 

|**ECLASS 5.0**|27270906|
|---|---|
|**ECLASS 5.1.4**|27270906|
|**ECLASS 6.0**|27270906|
|**ECLASS 6.2**|27270906|
|**ECLASS 7.0**|27270906|
|**ECLASS 8.0**|27270906|
|**ECLASS 8.1**|27270906|
|**ECLASS 9.0**|27270906|
|**ECLASS 10.0**|27270906|



**2024-04-15 09:25:50 | Product data sheet Subject to change without notice** 

**CONTRAST SENSORS | SICK** 

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**KT8L-P3756 | KT8** CONTRAST SENSORS 

|**ECLASS 11.0**|27270906|
|---|---|
|**ECLASS 12.0**|27270906|
|**ETIM 5.0**|EC001820|
|**ETIM 6.0**|EC001820|
|**ETIM 7.0**|EC001820|
|**ETIM 8.0**|EC001820|
|**UNSPSC 16.0901**|39121528|



Dimensional drawing (Dimensions in mm (inch)) KT8L Laser 

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56 (2.20)<br>9 (0.35) 28 Sensing distance<br>(1.10) 150 mm (5.90 inch)<br>4<br>2<br>2.5<br>(0.10)<br>5<br>2<br>13 28 (1.10) 1<br>(0.51) 52 (2.05)<br>17 80 (3.15) 3<br>(0.67) (0.12)<br>M5<br>21 (0.83) M5 30.4 (1.20) Ø 25.5 (1.00)<br> (0.98)  (2.09)<br>25  (1.57) 53<br>40<br>3<br>**----- End of picture text -----**<br>


- ① Lens (light transmission), cannot be exchanged for pos. 4 

- ② M5 threaded mounting hole, 5.5 mm deep 

- ③ See dimensional drawing of lens 

- ④ Blind screw cannot be replaced by pos. 1 

- ⑤ Connector M12 (rotatable up to 90°) 

**4** 

**Product data sheet | 2024-04-15 09:25:50 Subject to change without notice** 

**CONTRAST SENSORS | SICK** 

**KT8L-P3756 | KT8** CONTRAST SENSORS 

## Adjustments 

KT8L Laser 

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Q Bank Timer<br>GVVOe¢ 1<br>OOOO 2<br>SET<br>3<br>– +<br>**----- End of picture text -----**<br>


- ① Function signal indicators (yellow) 

- ② Bar graph (green) 

- ③ Teach-in pushbutton / +/– pushbutton 

## Connection diagram 

Cd-329 

BN 1 +(L+) ~~<—-~~ BK 4 ~~-—T~~ Q BU 3 ~~—-=~~ -(M) WH l 2 QA ~~*—TI-~~ GY | 5 ET 

Concept of operation 

Connection type and diagram 

## **1. Position mark** 

## **2. Position background** 

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020000 Q Bank Timer 20000 Q Bank Timer<br>COX COD<br>SET SET<br>– + – +<br>**----- End of picture text -----**<br>


Press and hold SET button > 1 s. Press and hold SET button > 1 s. Yellow LED flashes. Yellow LED goes out. 

**2024-04-15 09:25:50 | Product data sheet Subject to change without notice** 

**CONTRAST SENSORS | SICK** 

**5** 

**KT8L-P3756 | KT8** CONTRAST SENSORS 

## Connection type and diagram 

## **1. Position background** 

## **2. Move at least one repeat length using the light spot** 

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Q Bank Timer Q Bank Timer Q Bank Timer<br>SET SET SET<br>– + – + – +<br>**----- End of picture text -----**<br>


Press and hold SET button. Emitted light turns white. 

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Hold down SET button.<br>**----- End of picture text -----**<br>


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Release SET button.<br>**----- End of picture text -----**<br>


## **Note** 

The bar display visualizes the detection reliability during teach-in. The more LEDs that illuminate, the better the teach-in: 1 LED illuminates = operation not reliable – contrast difference too low 

≤ 4 LEDs illuminate = operation OK – sufficient contrast difference 

> 4 LEDs illuminate = reliable operation – high contrast difference 

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Example<br>Dark switching Light switching<br>Internal signal  [a<br>received<br>Switching  Switching<br>threshold threshold<br>Internal signal<br>received<br>Output Q rrr Output Q<br>**----- End of picture text -----**<br>


## **Switching characteristics** 

Light/dark setting is defined using teach-in sequence or menu, cf. operating instructions. The switching threshold is set in the center between the background and the mark. Teach-in and the light/dark setting can also be configured using an external control signal. Configuration only possible via CAN (see operating instruction). 

**6** 

**Product data sheet | 2024-04-15 09:25:50 Subject to change without notice** 

**CONTRAST SENSORS | SICK** 

**KT8L-P3756 | KT8** CONTRAST SENSORS 

## Sensing distance 

Sensing distance 

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140 ALLO<br>120 TIVELELE<br>10080 TNCCELE MACELELE<br>60 CCNCECEE<br>4020 CENCE COC ASSES<br>0 200 400 600 800<br>(7.87) (15.75) (23.62) (31.50)<br>Sensing distance in mm (inch)<br>Relative sensitivity in %<br>**----- End of picture text -----**<br>


Recommended accessories 

Other models and accessories www.sick.com/KT8 

|~~es~~|**Brief description**<br>|**Type**<br>|**Part no.**<br>|
|---|---|---|---|
|Universal bar clamp systems<br>~~es~~||||
|~~B~~|Plate G for universal clamp bracket, steel, zinc coated, Universal clamp (2022726),<br>mounting hardware<br>~~B~~|BEF-KHS-G01<br>~~B~~|2022464<br>~~B_~~|
|~~r~~|Plate K for universal clamp bracket, steel, zinc coated, Universal clamp (2022726),<br>mounting hardware<br>~~r~~|BEF-KHS-K01<br>~~r~~|2022718<br>~~r~~<br>~~|~~|
|oe|Universal clamp bracket for rod mounting, steel, zinc coated, without mounting hard-<br>ware|BEF-KHS-KH1|2022726<br>~~|~~<br>~~|~~|
|~~IN~~|Mounting bar, straight, 200 mm, steel, steel, zinc coated, without mounting hardware|BEF-MS12G-A|4056054<br>~~a~~|
||Mounting bar, straight, 300 mm, steel, steel, zinc coated, without mounting hardware|BEF-MS12G-B|4056055<br>~~a~~|
|~~IN~~<br><|Mounting bar, L-shaped, 150 mm x 150 mm, steel, steel, zinc coated, without mounting<br>hardware|BEF-MS12L-A|4056052<br>~~a~~<br>~~a~~|
||Mounting bar, L-shaped, 250 x 250 mm, steel, steel, zinc coated, without mounting<br>hardware|BEF-MS12L-B|4056053<br>~~a~~<br>~~a~~|



**2024-04-15 09:25:50 | Product data sheet Subject to change without notice** 

**CONTRAST SENSORS | SICK** 

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**KT8L-P3756 | KT8** CONTRAST SENSORS 

||**Brief description**|**Type**|**Part no.**|
|---|---|---|---|
|Plug connectors and cables||||
||• **Connection type head A:**Female connector, M12, 5-pin, straight, A-coded<br>• **Connection type head B:**Flying leads<br>• **Signal type:**Sensor/actuator cable<br>• **Cable:**2 m, 5-wire, PVC<br>• **Description:**Sensor/actuator cable, unshielded<br>• **Application:**Zones with chemicals|YF2A15-<br>020VB5XLEAX|2096239|
||• **Connection type head A:**Female connector, M12, 5-pin, straight, A-coded<br>• **Connection type head B:**Flying leads<br>• **Signal type:**Sensor/actuator cable<br>• **Cable:**5 m, 5-wire, PVC<br>• **Description:**Sensor/actuator cable, unshielded<br>• **Application:**Zones with chemicals|YF2A15-<br>050VB5XLEAX|2096240|
||• **Connection type head A:**Female connector, M12, 5-pin, straight, A-coded<br>• **Connection type head B:**Flying leads<br>• **Signal type:**Sensor/actuator cable<br>• **Cable:**10 m, 5-wire, PVC<br>• **Description:**Sensor/actuator cable, unshielded<br>• **Application:**Zones with chemicals|YF2A15-<br>100VB5XLEAX|2096241|
||• **Connection type head A:**Female connector, M12, 5-pin, angled, A-coded<br>• **Connection type head B:**Flying leads<br>• **Signal type:**Sensor/actuator cable<br>• **Cable:**2 m, 5-wire, PVC<br>• **Description:**Sensor/actuator cable, unshielded<br>• **Application:**Zones with chemicals|YG2A15-<br>020VB5XLEAX|2096215|
||• **Connection type head A:**Female connector, M12, 5-pin, angled, A-coded<br>• **Connection type head B:**Flying leads<br>• **Signal type:**Sensor/actuator cable<br>• **Cable:**5 m, 5-wire, PVC<br>• **Description:**Sensor/actuator cable, unshielded<br>• **Application:**Zones with chemicals|YG2A15-<br>050VB5XLEAX|2096216|
||• **Connection type head A:**Female connector, M12, 5-pin, angled, A-coded<br>• **Connection type head B:**Flying leads<br>• **Signal type:**Sensor/actuator cable<br>• **Cable:**10 m, 5-wire, PVC<br>• **Description:**Sensor/actuator cable, unshielded<br>• **Application:**Zones with chemicals|YG2A15-<br>100VB5XLEAX|2096217|
|)|• **Connection type head A:**Female connector, M12, 5-pin, straight<br>• **Description:**Unshielded, Head A: female connector, M12, 5-pin, straight, unshielded,<br>for cable diameter 4 mm ... 6 mm Head B: -<br>• **Connection systems:**Screw-type terminals<br>• **Permitted cross-section:**≤ 0.75 mm²|DOS-1205-G|6009719|
||• **Connection type head A:**Female connector, M12, 5-pin, angled<br>• **Description:**Unshielded<br>• **Connection systems:**Screw-type terminals<br>• **Permitted cross-section:**≤ 0.75 mm²|DOS-1205-W|6009720|



**Product data sheet | 2024-04-15 09:25:50 Subject to change without notice** 

**8** 

**CONTRAST SENSORS | SICK** 

## SICK At A GlAnCe 

SICK is one of the leading manufacturers of intelligent sensors and sensor solutions for industrial applications. A unique range of products and services creates the perfect basis for controlling processes securely and efficiently, protecting individuals from accidents and preventing damage to the environment. 

We have extensive experience in a wide range of industries and understand their processes and requirements. With intelligent sensors, we can deliver exactly what our customers need. In application centers in Europe, Asia and North America, system solutions are tested and optimized in accordance with customer specifications. All this makes us a reliable supplier and development partner. 

Comprehensive services complete our offering: SICK lifetime Services provide support throughout the machine life cycle and ensure safety and productivity. 

For us, that is “Sensor Intelligence.” 

## WOrldWIde preSenCe: 

Contacts and other locations www.sick.com 

SICK AG | Waldkirch | Germany | www.sick.com

Updated at March 31, 2026

SICK is a globally recognized leader in factory and logistics automation technology, renowned for engineering advanced sensors and developing innovative digital services. Driven by a commitment to high precision, reliability, and versatility, the company provides the foundational components required to transform traditional manufacturing processes into intelligent, self-optimizing systems that adapt autonomously using real-time data. Our comprehensive selection of SICK products is heavily focused on their industry-leading sensing technologies. We offer a robust portfolio of light sensors designed to deliver exceptional accuracy and performance in demanding industrial environments. Furthermore, our extensive range features high-quality proximity sensors and switches, providing the dependable object detection essential for automated production, packaging, and material handling applications. To ensure seamless integration of these advanced sensor networks, our offering is complemented by specialized connectivity solutions such as SICK fiber optic lead assemblies. From consumer goods and electronics to logistics and automotive manufacturing, SICK delivers the cutting-edge automation technology necessary to maximize operational efficiency and maintain continuous, reliable performance across diverse industrial sectors.

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