If youβre not fully sure about BF4G-E, taking a closer look at Autonics Proximity Sensor, Bfx Series and Autonics Digital Counter often helps compare reliability, cost, and availability.
Autonics BF4G-E Fiber Optic Sensor
The Autonics BF4G-E Fiber Optic Sensor offers Green LED(525nm) light source, Frequency 1: Max. 0.5ms, Frequency 2: Max. 0.7ms response time, 12-24VDC power supply, Light ON/Dark ON(set by ON/OFF button) operation mode, NPN open collector control output. Manufactured by Autonics under the Autonics Fiber Optic Sensor category, this model belongs to the Autonics BF4 Series.

| Brand | Autonics |
| Product Type | Digital Display Fiber Optic Amplifiers |
| Model Number | BF4G-E |
Autonics BF4G-E Fiber Optic Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Type | External synchronization input type |
| Light source | Green LED(525nm) |
| 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 | - |
| Self-diagnosis output | ON state under unstable sensing(when the target stays for 300ms in unstable level),ON state when control output is short-circuitedβ’Load voltage: Max. 30VDC @(=)β’Load current: Max. 50mAβ’Residual voltage - Max. 1V(load current: 50mA), Ma |
| Cable specification | Γ4mm, 6-wire, 2m(AWG24, core diameter: 0.08mm, number of cores: 40, insulator out diameter: Γ1mm) |
| Input of stop transmission function | Built-in |
| External synchronization function | Built-in(gate/trigger) |
| Sensitivity adjustment | Manual |
| Environment_Ambient illumination | Sunlight: Max. 11,000lx, Incandescent lamp: Max. 3,000lx (received illumination) |
| Environment_Ambient temperature | -10 to 50β, storage: -20 to 70β |
| 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 Autonics BF4G-E is an advanced Fiber Optic Sensor Amplifier with a digital display and built-in external synchronization input. It uses a Green LED (525nm) light source and delivers excellent responsiveness with a maximum reaction time of 0.5ms (Frequency 1) and 0.7ms (Frequency 2), making it suitable for rapid production and inspection lines. The sensor operates on a 12β24VDC supply (Β±10%) with a low current consumption of max. 45mA, maintaining energy efficiency across demanding environments. The NPN open collector output ensures seamless connection with PLCs, and Light ON / Dark ON modes can be toggled using the onboard ON/OFF button.
Additional features include built-in stop transmission and external sync functions such as gate and trigger modes. It also supports self-diagnosis output, which activates when sensing stability is compromised or during control output short-circuits, providing early fault alerts. The BF4G-E is designed to operate reliably in ambient conditions ranging from -10 to 50Β°C, with humidity tolerances between 35% and 85% RH. Housed in a rugged heat-resistant ABS and polycarbonate body, and weighing approximately 120g, this model ensures long-term use even in tough industrial setups. To explore all compatible Autonics sensing products, visit the Autonics Sensors & Controllers or check the full range of Autonics Fiber Optic Sensors.
Engineers and technicians appreciate the simple ON/OFF button for mode switching, as well as the built-in fault detection that prevents unplanned downtime. With its compact design and robust build, the Autonics BF4G-E fits easily into control cabinets and performs reliably under fluctuating conditions. Whether you're installing it in a cleanroom or a light-sensitive inspection area, this amplifier provides accurate and consistent signal output with minimal configuration time.







