Fingerprint module is activated by finger inductionThe relay time can be adjusted by rotating the buttonRegistering is very simple, just press the SET button to register The product is and easy to installCan 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--24VControl board standby current: 6mA (at DC12V)Output: relay, rated current 10AInstructions 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 factory 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: silverMaterial: aluminum + PCBsize: 51.5 * 48mmPackage Contents: 1 * K215 Fingerprint control board1 * R503 Fingerprint moduleOnly the above package content, other products are not included.Note: Light 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.