... , 06, 08......20)Protection height=(xx-1)×light axis spacingSNAxx20 100,140,180,220......1420mmSNAxx30 150,210,270,330......2130mmSNAxx40 120 ... ,for 3 axesDielectric strengthAC1500V, 60sInsulation resistance>100MΩ High Sensitivity Photo-Electronic Safety Device for Machine