Technical Parameters: Supply voltage: DC 4.4 ~ 6.0V Supply current: Operating current: 110mA (typical) Peak current: 140mA   Fingerprint image entry time: <0.3 seconds     Matching: Matching (1: 1) Search method (1: N)   Feature file: 256 bytes   Template file: 512 bytes   Storage capacity: 500 pieces   Security Level: Level 3   (FAR): <0.0001%   Rejection rate (FRR): <1.0%   Search time: <1.0 seconds (1: 1000, mean)   Host interface: UART   Communication baud rate (UART): 57600bps, can not be modified.     working environment: Temperature: -20 ° C to + 40 ° C Relative humidity: 40% RH-85% RH (no condensation)   Storage environment: Temperature: -40 ? - + 85 ? Relative humidity: <85% H (no condensation)   RS232 (TTL level) interface is 6-wire: Vt, Vcc, TXD, RXD, GND, TOUCH, factory baud rate: 57600bps Product in kind contains a fingerprint module, a 6-core cable   Applicable to fingerprint lock, fingerprint safe and other occasions   In fact, the secondary development of this fingerprint module is actually relatively simple, on the 8 orders