... axis pitch20mm, 40mm,80mmSource of lightInfrared,940nm Light immunity10000Lux(angle of incidence≥5°)Electric characteristicsSupply ... controller:Relay 1,2 indicator,passing light indicator,intercepting light indicator, power indicator,self-examing indicator ... IP54Emitter and receiver shellAluminum Emitter and receiver light filterOrganic glassZ type controller shellPlasticSingal cableEmitter 8m ...