... fingerprint lock Control panel circuit board Electronic, didgi biometric sensor readers,Module, optics fingerprintFingerprint Module,fingerprint lock password lock ... finger current template), if the receipt of a finger image bad (0x21, 0x22, etc.), repeat step 1; Step 2: ... finger current template), if the receipt of a finger image bad (0x21, 0x22, etc.), repeat step 1; need other information ...