... design the structure is reliable the contour is artistic Installation and use is easy STF seriesProtection range, 400-3000mm;Protection ... 08,10,40) Protection height= (xx-1) ×40mm, 120,1560mm Light axis pitch--40mm The product uses the reflection type design ... a sensor, a reflector, a controller and a signal cable. The emitting light unit and receiving light unit is concentrated in the sensor, through ...