Autonics BF4R Fiber Optic Sensor
TheBF4R is an Autonics Digital Display Fiber Optic Amplifiers with 12-24VDC power supply and Max. 0.5–0.7ms response time for industrial automation applications. The sensor operates in Light ON/Dark ON mode, uses Red LED(660nm) light source, consumes Max. 45mA, and features NPN open collector output. Learn more about the Autonics, its Fiber Optic Sensors, and the BF4 Series.

| Brand | Autonics |
| Product Type | Digital Display Fiber Optic Amplifiers |
| Model Number | BF4R |
Autonics BF4R Fiber Optic Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Type | Standard type |
| Light source | Red LED(660nm) |
| Response time | Frequency 1: Max. 0.5ms, Frequency 2: Max. 0.7ms |
| Power supply | 12-24VDC |
| Current consumption | Max. 45mA |
| Operation mode | Light ON/Dark ON(set by ON/OFF button) |
| Control output | NPN open collector |
| Timer function | OFF Delay(40ms) |
| Self-diagnosis output | ON state under unstable sensing(when the target stays for 300ms in unstable level),ON state when control output is short-circuited•Load voltage: Max. 30VDC @(=)•Load current: Max. 50mA•Residual voltage - Max. 1V(load current: 50mA), Ma |
| Cable specification | Ø4mm, 4-wire, 2m(AWG22, core diameter: 0.08mm, number of cores: 60, insulator out diameter: Ø1.25mm) |
| Input of stop transmission function | - |
| External synchronization function | - |
| Sensitivity adjustment | Manual |
| Environment_Ambient illumination | Sunlight: Max. 11,000lx, Incandescent lamp: Max. 3,000lx (received illumination) |
| Environment_Ambient temperature | -10 to 50℃, storage: -20 to 70℃ |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Material | Case: Heat-resistance acrylonitrile butadiene styrene, Cover: Polycarbonate |
| Accessories | Fixing bracket, Bolts, Nuts |
| Weight | Approx. 120g(approx. 65g) |
The BF4R Autonics Digital Display Fiber Optic Amplifiers provides 12-24VDC power supply, Red LED(660nm) light source, 0.5–0.7ms response time, and NPN open collector output. It belongs to the BF4 Series and is widely used in industrial automation applications. Autonics BF4R ensures accurate and stable detection for reliable performance.
In industrial setups, BF4R is suitable for conveyors, packaging systems, assembly lines, and robotic automation. Its standard type sensor enables consistent detection even in complex positions, reducing errors and downtime. Engineers benefit from precise sensing, durable performance, and continuous operational reliability.
Autonics BF4R combines fast response, 12-24VDC supply, and Light ON/Dark ON operation in a compact design. Trusted in automation environments, it delivers reliable detection, stable output, and long-term stability. Engineers and industrial buyers can rely on Autonics and the BF4 Series for precise, repeatable sensing in critical industrial processes.







