European and American pistol safe wall-mounted quick fingerprint opening key two-in-one functionProduct features: 1. Semiconductor fingerprint module, with a false rejection rate as low as 0. 01% and a recognition rate as low as 0. 001%, the recognition rate is much higher than the popular scratch type fingerprint recognition module on the market 2. Low voltage alarm, when the battery is low, every time you open the safe, it will ring three times, and the LED indicator light flashes three times to indicate that the voltage is insufficient,