Compatible with DC10V-120V voltage range; Three verification methods: fingerprint, IC card, mobile phone NFC Three control modes can be switched: jog mode, self-locking mode, ignition mode; In the jog mode, the output time can be adjusted, and the output can be up to 15 minutes With relay normally open and normally closed output control. Interface:Lock Control,Exit Button The product appearance and printed words may vary depending on the batch, but this does not affect use Specification:S3 Colour:As Shown Material:plastic Package Contents: 1 x Relay module with accessories 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.