Autonics BH20M-TDT Photoelectric Sensor
The Autonics BH20M-TDT Photoelectric Sensor delivers a 20m through-beam sensing distance using a red LED light source. It supports a 1ms response time, Light ON/Dark ON operation, NPN/PNP simultaneous output, 12–24VDC supply, and a 2.1m cable connection. Manufactured by Autonics and placed under the Autonics brand, this model is listed in the Autonics Photoelectric Sensors section and forms part of the Autonics BH Series.
| Brand | Autonics |
| Product Type | Photoelectric Sensor |
| Model Number | BH20M-TDT |
Autonics BH20M-TDT Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing type | Through-beam type |
| Sensing distance | 20m |
| Sensing target | Opaque material of min. Ø20mm |
| Response time | Max. 1ms |
| Light source | Red LED(660nm) |
| Sensitivity adjustment | Sensitivity adjuster |
| Operation mode | Light ON/Dark ON(set by switch) |
| Power supply | 12-24VDC |
| Current consumption | Emitter/Receiver: Max. 20mA |
| Control output | NPN, PNP open collector simultaneous output |
| Environment_Ambient illumination | Sunlight: Max. 11,000lx, Incandescent lamp: Max. 3,000lx (received illumination) |
| Environment_Ambient temperature | -25 to 55℃, storage: -40 to 70℃ |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Protection structure | IP67 |
| Connection type | Cable type(Ø4, 2.1m) |
| Material | Case: Polycarbonates, LED indicator: Polycarbonates, Sensing part: Polymethyl methacrylate acrylic |
| Accessories_Common | Adjustment screwdriver, fixing bracket, M18 fixing nut, fixing cap, M3 bolt, M3 nut |
| Weight | Approx. 190g(approx. 120g) |
The Autonics BH20M-TDT Photoelectric Sensor ensures dependable detection with a 20m through-beam range, red LED source, 1ms response time, and NPN/PNP simultaneous output. This Autonics model belongs to the BH Series and is used across industrial automation environments in India requiring long-distance, accurate beam-based sensing.
This sensor is suitable for conveyors, packaging machinery, automated inspection, and assembly systems where precise object interruption detection is essential. The through-beam design supports stable performance over long distances, while the Light ON/Dark ON switch offers simple configuration. Its wide 12–24VDC compatibility and open-collector outputs enable flexible integration with industrial control equipment.
The Autonics BH20M-TDT Photoelectric Sensor provides consistent performance with its extended sensing range, rapid response, and reliable output structure. As part of the Autonics BH Series, it supports industrial operations requiring stable object detection in high-speed production setups. This model is a dependable choice for users needing clear, repeatable sensing results in demanding automation tasks.
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