Fingerprint module is activated by finger induction The relay time can be adjusted by rotating the button Registering is simple, just press the SET button to register The product is and easy to install Can up to 200 The control board can be used in automobile ignition control, access control and other occasions, the input voltage range is wide; it can be connected to most of fingerprint modules (R300, R301T, R303T, R307, R501, R503, etc.) Input power: DC9V--24V Control board standby current: 6mA (at DC12V) Output: relay, rated current 10A Instructions for use: 1. Short press the setting key, the light flashes quickly, you can register , each fingerprint finger press twice, hearing music indicates that fingerprint registration is successful, you can continue to register, 8 seconds without registration to exit the registration state. 2. Long press the setting key to hear long sound and , the initialization is successful, and the value is restored. 3. Use: When the function setting selects 1-2 connection, the relay closes for 10 seconds after the fingerprint passes; when the 2-3 connection is , the relay closes after the fingerprint passes; the relay is released after pressing the fingerprint again; the relay after power off freed. colour: silver Material: aluminum + PCB size: 51.5 * 48mm Package Contents: 1 * K215 Fingerprint control board 1 * R503 Fingerprint module Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.