This auto-leveling device suits for Auto-leveling Anet A8. You need to confirm whether the machine has automatic leveling function. 

This product may not be compatible with other brands of 3D printers.

10-30V DC working voltage, output NPN.NO.

Overview:

1. 3d printer waterproof anti-jamming DC three-wire npn often open square inductive metal sensor proximity switch sensor 10-30v.

2. This is an auto-level sensor for the Anet A8 

3. Easy installation, just unplugs the original z stop and plug-in sensor

4. Need to flash firmware to enable auto bed leveling feature.

Specifications:

Type SN04-N

Suits for: Auto-leveling Anet A8 3D printer

Wire Type: DC 3 Wire Type(Brown, Black, Blue)

Working Voltage : DC 10-30VDC or less

Sensor Size: 1.8 * 1.8 * 3.6cm / 0.7 * 0.7 * 1.4in(W*H*L)

Cable Length: 145cm / 57in

Output mode: NPN three-line normally open

Output current: 300 mA (mA)