Description: Works well with Anet A8 3D printer. Pretty solution for auto-adjusting heatbed level, convenient for use. 3D printer waterproof anti-jamming DC three-wire npn,10-30V DC working voltage. Anti-jamming three-wire, 140cm / 55.1in cable length. Comes with mounting plate and pre soldered connector so no wiring is needed, just unplug the original z stop and plug in sensor and screw into the back of printer. Specification: Suits for: Anet A8 Wire Type: DC 3 Wire Type(Brown, Black, Blue) Working Voltage: 10-30V DC Current: 300mA Output form?DC three-wire NPN normally open Detect Distance: 5mm Sensor Size: 18x18x36mm Cable Length: 140cm / 55.1" Package Includes: 1Piecex Auto Leveling Sensor 1Piecex Acrylic Plate 2Piecex Screw (M3x30mm) 1Piecex glue bag(13x9cm)