HL18-A4A3BA

Photo Sensor, 6.5 m, NPN/PNP, Retroreflective, 30 VDC, 4 Pin M12 Connector, H18 Sure Sense Series

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Manufacturer: SICK
Product type:
SVHC: No SVHC (21-Jan-2025)
Product Range: H18 Sure Sense Series
Sensing Method: Retroreflective
Connection Method: 4 Pin M12 Connector
Sensing Range Max: 6.5m
Sensor Output Type: NPN / PNP
Supply Voltage DC Max: 30V
Supply Voltage DC Min: 10V

Delivery and price
Units per pack	50
Price	99.77 €
Current stock	10+
Lead time	30 days

Datasheet

HL18-A4A3BA H18 Sure Sense 

**HYBRID PHOTOELECTRIC SENSORS** 

**HL18-A4A3BA | H18 Sure Sense** HYBRID PHOTOELECTRIC SENSORS 

## Ordering information 

**Type Part no.** ~~Po~~ HL18-A4A3BA 1071747 Other models and accessories www.sick.com/H18_Sure_Sense 

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## Detailed technical data 

## Features 

|**Functional principle**|Photoelectric retro-reflective sensor|
|---|---|
|**Functional principle detail**|Dual lens|
|**Dimensions (W x H x D)**|16.2 mm x 48.5 mm x 31.8 mm|
|**Housing design (light emission)**|Hybrid|
|**Thread diameter (housing)**|M18|
|**Mounting system type**|M18, head/side (24.1 … 25.4 mm)|
|**Housing color**|Blue|
|**Sensing range max.**|0.03 m ... 6.5 m1)|
|**Sensing range**|0.03 m ... 5 m1)|
|**Type of light**|Visible red light|
|**Light source**|PinPoint LED2)|
|**Light spot size (distance)**|130 mm x 260 mm (6.5 m)|
|**Wave length**|631 nm|
|**Adjustment**||
|Potentiometer, right|None|
|Potentiometer, left|None|
|**Special features**|Signal strength light bar|



1) Reflector PL80A. 

2) Average service life: 100,000 h at TU = +25 °C. 

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**HL18-A4A3BA | H18 Sure Sense** HYBRID PHOTOELECTRIC SENSORS 

## Mechanics/electronics 

|**Supply voltage**|10 V DC ... 30 V DC|
|---|---|
|**Ripple**|< 5 Vpp 1)|
|**Current consumption**|≤ 20 mA2)|
|**Switching output**|PNP, NPN|
|**Switching mode**|Dark switching|
|**Switching output detail**||
|Switching output Q1|PNP, Dark switching|
|Switching output Q2|NPN, Dark switching|
|**Output current Imax.**|≤ 100 mA|
|**Response time**|≤ 0.5 ms3)|
|**Switching frequency**|1,000 Hz4)|
|**Connection type**|Male connector M12, 4-pin|
|**Circuit protection**|A5)<br>B6)<br>D7)|
|**Protection class**|III|
|**Weight**|18 g|
|**Polarisation filter**|✔|
|**Housing material**|Plastic, VISTAL®|
|**Optics material**|Plastic, PMMA|
|**Enclosure rating**|IP67<br>IP69K|
|**Items supplied**|Fastening nut (1x), M18, plastic, black, flat|
|**Electromagnetic compatibility (EMC)**|EN 60947-5-2 (The sensor complies with the Radio Safety Requirements (EMC) for the indus-<br>trial sector (Radio Safety Class A). It may cause radio interference if used in a residential area.)|
|**Ambient operating temperature**|–40 °C ... +70 °C|
|**Ambient temperature, storage**|–40 °C ... +75 °C|
|**UL File No.**|E189383|



1) May not exceed or fall below Uv tolerances. 

2) Without signal strength light bar and load. 

3) Signal transit time with resistive load. 

4) With light/dark ratio 1:1. 

5) A = VS connections reverse-polarity protected. 

- 6) B = inputs and output reverse-polarity protected. 

7) D = outputs overcurrent and short-circuit protected. 

## Safety-related parameters 

|**MTTFD**|730.1 years|
|---|---|
|**DCavg**|0 %|



## Classifications 

|**ECLASS 5.0**|27270902|
|---|---|
|**ECLASS 5.1.4**|27270902|
|**ECLASS 6.0**|27270902|



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**ECLASS 6.2** 27270902 **ECLASS 7.0** 27270902 **ECLASS 8.0** 27270902 **ECLASS 8.1** 27270902 **ECLASS 9.0** 27270902 **ECLASS 10.0** 27270902 **ECLASS 11.0** 27270902 **ECLASS 12.0** 27270902 **ETIM 5.0** EC002717 **ETIM 6.0** EC002717 **ETIM 7.0** EC002717 **ETIM 8.0** EC002717 **UNSPSC 16.0901** 39121528 Connection/Pin assignment **Connection type** Male connector M12, 4-pin **Pin assignment** BN 1 + (L+) WH 2 Q2 BU 3 - (M) BK 4 Q1 ~~—~~ **4 PHOTOELECTRIC SENSORS | SICK Product data sheet | 2024-03-12 16:10:49** 

**Product data sheet | 2024-03-12 16:10:49 Subject to change without notice** 

**HL18-A4A3BA | H18 Sure Sense** HYBRID PHOTOELECTRIC SENSORS 

## Dimensional drawing (Dimensions in mm (inch)) 

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16.2 (0.64) 31.4 (1.24)<br>10.1 (0.40)<br>D<br>10.5 (0.41)<br>B 7.5 (0.30) 4<br>A<br>C<br>3<br>M12 x 1<br>0.9 (0.04)<br>2 M18 x 1<br>5<br>1<br>(0.95) (1.00)<br>)<br>(1.91) 24.1  25.4<br>12.7 0.50(<br>48.5<br>8.6 0.34)(<br>(0.59)<br>15<br>**----- End of picture text -----**<br>


- ① LED indicator yellow: Status of received light beam 

- ② LED indicator green: power on 

- ③ M3 mounting hole 

- ④ Snap Connection for flush ring (sold seperatly) 

- ⑤ Potentiometer (if selected) or LED Indicators 

|**Dimensions in mm (inch)**|**Receiver**|**Receiver**|**Sender**|**Sender**|
|---|---|---|---|---|
||**A**|**B**|**C**|**D**|
|**HTB18 / HTF18**|- 1.1 (0.04)|1.1 (0.04)|4.7 (0.19)|0.6 (0.02)|
|**HTE18 / HL18 / HSE18**|2.5 (0.1)|0.0 (0.0)|4.0 (0.16)|0.0 (0.0)|
|**HTB18L / HTF18L /**<br>**HL18L / HSE18L**|2.5 (0.1)|0.0 (0.0)|3.5 (0.14)|0.0 (0.0)|



## Connection type 

Connection type. see table: Connection/PIN assignment 

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2 1<br>3 4<br>M12 male connector, 4-pin, A-coding<br>**----- End of picture text -----**<br>


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## Adjustments possible 

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2 1<br>a<br>3<br>**----- End of picture text -----**<br>


- ① LED indicator yellow: Status of received light beam 

- ② LED indicator green: power on 

- ③ Signal strength light bar 

## Characteristic curve 

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Operating reserve<br>100<br>SSE ESSE<br>jf}| | | fy<br>10<br>g=NNEEE<br>la<br>PNT TUNING I<br>6 2 1<br>1 PNA<br>0 1 2 3 4 5 6 7<br>(3.28) (6.56) (9.84) (13.12) (16.40) (19.67) (22.97)<br>Distance in m (feet)<br>**----- End of picture text -----**<br>


① Reflector PL80A 

- ② Reflector PL40A 

- ⑥ Reflective tape IREF6000 (REF-IRF-56) 

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**HL18-A4A3BA | H18 Sure Sense** HYBRID PHOTOELECTRIC SENSORS 

## Light spot size 

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mm (inch)<br>300<br>(11.81)<br>200<br>(7.87)<br>100<br>(3.94)<br>0<br>1 2 3 4 5 6 7<br>(3.28) (6.56) (9.84) (13.12) (16.40) (19.69) (22.97)<br>Distance in m (feet)<br>**----- End of picture text -----**<br>


## **Dimensions in mm (inch)** 

|**Sensing range**|**Horizontal**|**Vertical**|
|---|---|---|
||||
|**0.5 m**|18|10|
|**(1.64 feet)**|(0.71)|(0.39)|
||||
|**1 m**|40|20|
|**(3.28 feet)**|(1.57)|(0.79)|
||||
|**5 m**|200|100|
|**(16.40 feet)**|(7.87)|(3.94)|
||||
|**6.5 m**|260|130|
|**(21.33 feet)**|(10.24)|(5.12)|



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


## Sensing range diagram 

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� 0.03 5.0 6.5<br>� 0.03 4.0 5.0<br>� 0.03 4.0 5.0<br>� 0.03 1.8 3.0<br>� 0.03 1.3 2.2<br>� 0.4/0.8 [1.5]<br>0 1 2 3 4 5 6 7<br>(3.28) (6.56) (9.84) (13.12) (16.40) (19.67) (22.97)<br>Distance in m (feet)<br>Sensing range Sensing range max.<br>**----- End of picture text -----**<br>


- ① Reflector PL80A 

- ② Reflector PL40A 

- ③ Reflector P250 

- ④ Reflector PL30A, PL31A 

- ⑤ Reflector PL20A 

- ⑥ Reflective tape IREF6000 (REF-IRF-56) 

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## Functions 

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100 % 100 % 100 % 100 % 100 %<br>= =<br>0 % 0 % 0 % 0 % 0 %<br>**----- End of picture text -----**<br>


||**Brief description**|**Type**|**Part no.**|
|---|---|---|---|
|Mounting brackets and plates||||
||Universal mounting bracket for reflectors, steel, zinc coated|BEF-WN-REFX|2064574|
|Plug connectors and cables||||
|2|• **Connection type head A:**Female connector, M12, 4-pin, straight, A-coded<br>• **Connection type head B:**Flying leads<br>• **Signal type:**Sensor/actuator cable<br>• **Cable:**5 m, 4-wire, PVC<br>• **Description:**Sensor/actuator cable, unshielded<br>• **Application:**Zones with chemicals<br>.|YF2A14-<br>050VB3XLEAX|2096235|
||• **Connection type head A:**Male connector, M12, 4-pin, straight<br>• **Description:**Unshielded<br>• **Connection systems:**Screw-type terminals<br>• **Permitted cross-section:**≤ 0.75 mm²|STE-1204-G|6009932|
|Reflectors||||
||Rectangular, screw connection, 51 mm x 61 mm, PMMA/ABS, Screw-on, 2 hole mount-<br>ing|P250|5304812|



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## 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 April 16, 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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