1.Compatible with voltages in the range of DC3.5V-15V; 2.Three control modes can be switched: jog mode, self-locking mode, and ignition mode; 3.In jog mode, the output time can be adjusted, and the output can be up to 15 minutes; 4.It has the function of switching between normally open and normally closed output modes; 5.The s4 storage capacity is 300 ; Type:fingerprint control board Multifunctional fingerprint identification electric lock control module; multiple control modes to meet your needs; plug-in connection, convenient installation; suitable for DIY user modification, can be used for access control, car control , Electrical control, industrial control and other occasions. Can be connected to the exit button; Three control modes: Inching mode:turn on after fingerprint recognition; automatically turn off after releasing the finger and reaching the set delay time. Self-locking mode:turn on after recognizing the fingerprint; after releasing the finger, it will be disconnected immediately after re-identifying the fingerprint. Ignition mode:keep the fingerprint recognition unreleased; it will keep on all the time, and it will disconnect immediately after releasing the finger fingerprint module:s4 storage capacity:300 Colour:As Shown Material:plastic+metal Package Contents: 1 * Control board + shell 1 * fingerprint module 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.