Function description:
1. The wide voltage input of the control board is compatible with DC7V-DC30V; the length, width and height of the bare control board is 56*30*19mm. The length, width and height of the matching control panel box are 60*40*25mm respectively.
2. Suitable for DIY users to modify, used in access control, automobile control, electrical control, industrial control and other occasions.
3. You can freely choose the relay self-locking mode, jog mode, and ignition mode.
4. In jog mode, the time of relay control can be adjusted freely.
5. The recorded fingerprint information and the set jog time, relay mode, etc. will not be lost after power off.
6. You can delete all fingerprints, all ordinary user fingerprints, and specify individual ordinary user fingerprints. You can also restore the fingerprint factory settings with one key.
7. One-key unlocking function, an external mechanical button can realize one-key unlocking through the button (suitable for opening the door inside the access control door)
8. Reserve an expansion port, which can communicate with the MODBUS RTU serial port of the host device through an external 485 board or a USB board, display fingerprint unlock records, delete designated fingerprint numbers, register fingerprints, copy fingerprint features with one click, and so on.

Detailed description:
Press button to restore factory settings:
When the power is on, keep pressing the "Settings button" on the circuit board for more than 10 seconds, the red indicator light on the circuit board will light up and the fingerprint module will start to light up in white. At this time, release the "Settings button" and the green light will stay on for 1 second. It means the deletion is successful; the red light is always on for 1 second, it means the deletion failed. After restoring the factory state, the system will clear all fingerprint libraries, any fingerprint can control the relay to open.