Features: Adopts optical sensor with touching to wake up feature. Unlock by fingerprint, password or key. Up to 99 fingerprints capacity. Identification and contrast time is less than 1s, the contrast method is 1. N. Easily add or delete individual users directly on the lock. Reversible handle fit any left or right handed door. LED for easy operation. Powered by 4pcs 1.5V AA batteries(not included). Low voltage warning with beeps and red indicator light. External stand-by power supply for emergency situation. Fit most cylindrical locksets. Set to passage mode at any time. Unique normally open function to facilitate meetings and gatherings. Fingerprint won't lose if batteries are dead. Schlage style override key is for emergency. The mechanical key can't be used as regular key). Highly recommended for indoor use.
Size/Purity (Volume in oz., fl oz., grams, karats, etc):N/A If it applies, information regarding the size can be found on Tom Top website by clicking below: