Usage Tips:DescriptionAdoption of material, it is durable and long lasting use. It works well with Anet A8 3D printer. Pretty solution for auto-adjusting heatbed level, convenient for use. Comes withmounting plate and pre soldered connector so no wiring is needed. Just unplug the z stop and plug in sensor and screw into the back of printer.Feature- Color: As shown.- Material: Plastic and metal.- Package size: About 10 x 10 x 3cm/3.9 x 3.9 x 1.2inch(LxWxH).- Detect range: 5mm.- Working voltage: DC 10-30V.- Output method: NPN three wire normally open.- Current: 300mAh.- Adoption of material, it is durable and long lasting use.- Works well with Anet A8 3D printer.- Pretty solution for auto-adjusting heatbed level, convenient for use.- Comes withmounting plate and pre soldered connector so no wiring is needed. Just unplug the z stop and plug in sensor and screw into the back of printer.Packing list1 x Auto Leveling Position Sensor Kit for Anet A8 Prusa i3 3D Printer