... indicator,self-examing indicator.Electrical noise immunityIEC61000-4-4:level IV/IEC61000-4-2level IVInsulation resistance>100MΩDielectric strengthAC1500V,60sAmbient ... 10-55Hz frequency range,1octave/min.sweep rate,0.35mm±0.05 amplitude,20sweeps per axis,for 3 axesSealingEmitter ... cableEmitter 8m,4-core,connector /receiver 3m,6-core connector Type 4 Safety Light Curtain SNC series,0-8000mm protection ...