Working Range0 up to 250 m (operating reserve: 8 times @ 250 m). With optional tele-objectives: 0 up to 400 m (operating reserve: 8 times @ 400 m)HousingAl-CastDimensionsappr. 57 x 125 x 80 [mm] (W x H x D)Protection ModeIP65Connection ModeTerminal Block or Plug and Socket ConnectionTransmitting LightLED 880 nm, invisiblePower Supply24 VDC / 90 mA without electrical load; other voltages on requestSignal Modebright- / dark-switching, selectableControl OutputRelay, PNP-Transistor, Opto-coupler (alternatively)DisplayLED (Switch- / Working- / Pollution Warning Indicator); DIANA (Level Indicator)Ambient Temperature-25 .. +60 Celsius degreeSpecial/Optional FeaturesCable length between transmitter and receiver up to 350 m (low capacitance up to 500 m); Interference suppression by forced synchronization; Pollution warning output