Qualified Sensors From Taiwan RiKO 

General Purpose Compacted Area Sensor. 7 LEDs each on emitter and receiver. LEDs blink from top to bottom under the normal emission. All LEDs light up under the emitting circuit failure and will become blinking until the normal emission.

Emitting light: Infrared radiation diode 850 nm

Our products are compatible with many big brands.

Custom design is welcome.