20mm long thread fingerprint head+control board 5V-24V power supply 50 fingerprint capacity Time adjustable Relay inching - self-locking - ignition switching Can be controlled by mobile phone Fingerprint head opening 25mm fixed Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Note:The color appearance is random and cannot be specified, which will not affect the use. Colour:Random Color Material:PCB Package Contents: 1 * Control board with fingerprint head 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.