In sourcing discussions, BS5-K2M is often placed next to Autonics Proximity Sensor, Autonics Digital Counter and Autonics Bs5 L2M P so procurement teams can align budgets and technical requirements effectively.
Autonics BS5-K2M Photomicro Sensor
The Autonics BS5-K2M Photomicro Sensor offers Through-beam type, 5mm sensing distance, Infrared LED(940nm) light source, 5-24VDC power supply, NPN open collector output control output. Manufactured by Autonics under the Autonics Photomicro Sensor category, this model belongs to the Autonics BS5 Series.

| Brand | Autonics |
| Product Type | Photomicro Sensor |
| Model Number | BS5-K2M |
Autonics BS5-K2M Photomicro Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Sensing type | Through-beam type |
| Sensing distance | 5mm |
| Sensing target | Opaque |
| Min. sensing target | β₯Γ0.8mmΓ2mm |
| Hysteresis(distance) | β€0.05mm |
| Response time | Light ON: Max. 20γ², Dark ON: Max. 100γ² |
| Response frequency | 2kHz |
| Light source | Infrared LED(940nm) |
| Operation mode | Light ON/Dark ON(set by control wire) |
| Indicator | Operation indicator (red LED) |
| Power supply | 5-24VDC |
| Current consumption | Max. 30mA |
| Control output | NPN open collector output |
| Load voltage | β€30VDC@(=) |
| Load current | Max. 100mA |
| Residual voltage | NPN: β€1.2VDC@(=), PNP: β€ 1.2VDC@(=) |
| Protection circuit | Reverse polarity protection circuit, output overcurrent (short-circuit) protection circuit |
| Insulation resistance | β₯20 MΞ© (250 VDC@(=) megger) |
| Noise immunity | The square wave noise (pulse width: 1γ²) by the noise simulator Β±240VDC@(=) |
| Dielectric strength | Between the charging part and the case: 1,000 VAC~ 50/60 Hz for 1 minute |
| Vibration | 1.5mm amplitude (max. acceleration 196m/sΒ²) at frequency of 10 to 2,000Hz in each X, Y, Z direction for 2 hours |
| Shock | 15,000 m/sΒ² (approx. 1,500G) in each X, Y, Z direction for 3 times |
| Environment_Ambient illumination | Fluorescent lamp: Max. 1,000lx(received illumination) |
| Environment_Ambient temperature | -20 to 55β, storage : -25 to 85β |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Protection structure | IP50 (IEC standard) |
| Connection | Connector type |
| Material | Case: PBT, Sensing part: PC |
| Weight_Body | Approx. 30g |
The Autonics BS5-K2M is a high-precision Photomicro Sensor equipped with a through-beam detection system and a stable 5mm sensing distance. It can detect opaque targets as small as Γ0.8mm Γ 2mm, offering consistent performance in space-constrained automation setups. Its infrared LED light source (940nm) ensures reliable sensing even in environments with ambient lighting up to 1,000lx. The sensor is designed for repeatability, maintaining a hysteresis below 0.05mm, and is capable of responding at 20Β΅s in Light ON mode and 100Β΅s in Dark ON, with a switching frequency of 2kHz.
Powered by a 5β24VDC Β±10% input with low 30mA current consumption, the sensor ensures energy efficiency in high-speed machines. It features a NPN open collector output with built-in reverse polarity and short-circuit protection circuits. The connector-type interface simplifies wiring, while the IP50-rated housing made of PBT and PC ensures operational durability. With resistance to vibration up to 196m/sΒ² and shock levels of 15,000 m/sΒ², this model is built for tough industrial environments. Explore the full range of Autonics sensors on the official Autonics product page.
Engineers benefit from its slim profile, connector-based wiring, and consistent output, making installation and replacement straightforward during plant maintenance. The high shock and vibration tolerance ensures uninterrupted operation in equipment that undergoes constant movement or tooling vibrations. For compact machines where sensor reliability and fast feedback are essential, trust the Autonics BS5-K2M.







