... relay, dual NPN/PNP out, perfect compatibility 1.Basic introductionSNA2220 light curtain series, sensor section size is 53 ×35,structure ... , the contour is artistic.(2)Light curtain form:Direct transmission type(3)Standard configuration:Emitter/1,Receiver/1,N type controller ... -N)Notes Notes *Identifies the parameters for the selected Infrared light sensor for guarding industrial automated machines