... 3.interference immunity 4.Fast response 1.Basic introductionSNB3230 series, sensor section size is 53 ×35,structure compact,beautiful outlook,mainly ... 1 root,(4)Controller:N type, inside installation,control 1 set light curtain,the powersource is AC220V/110V(terminals) or ... DC24V; W type, outside installation,control 1 set light curtain,the power source is AC220V/110V(switch conversion ...