Output: NPN (Normally Open and Normally Closed Adjustable) E3z-ls61-50n Square Laser Animation Reflection Photoelectric Switch Sensor Infrared Sensor Visible Light Switch I.1120009165 Photoelectric Sensor M12 Laser Diffuse Reflection Photoelectric Switch Visible Light Sensor Infrared Sensing Switch 15cm I.813540854 Laser Photoelectric Sensor E3Z-LS61 Compact Photoelectric Sensor with Built-in Amplifier, Square type, Sensing distance: 20 to 200 mm (BGS max setting), NPN open collector, Pre-wired model... Diffuse reflection laser photoelectric switch sensor E3Z-LS61 This diffuse reflection infrared photoelectric switch can detect any opaque object within 0-7m, can be used automatic car washing device, security detection, automatic access control lever lifting, intelligent induction furniture Diffuse reflection laser photoelectric switch sensor E3Z-LS61Detection distance: 300MM AdjustableOutput: NPN (Normally Open and Normally Closed Adjustable)