. Protection level: IP56 (sprayable) Trigger force: 1N Indicator light: normally closed: (lights up when triggered) Signal allowable current:Less than 50ma Be sure to read the wiring carefully: Red wire connects to COM- or GND, Black wire connects to the input port. If the connection is reversed, the probe not send a signal. The edge finder body is made of stainless steel, and the needle seat is made of 304 stainless steel, which has high strength and more stable measurement. The probe has a built-in battery, which is not rechargeable. It can be measured visually without wiring, or it can be connected to a controller for automatic measurement. Type:3D Edge Finder Model:-500 Output mode:N0 (normally open) Travel XY+-: 15 ° Travel Z -: 3mm Colour:As Shown Material:Metal Package Contents: 1 x -500 Edge Finder 1 x M3 probe ball 3mm 1 x 3 meter Type C Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.