Fingerprint door lock M600 use the fingerprint as a main key, password and RF card also can be the key to unlock the door. The mechanical key is designed for the emergency access. M600 now is up to 200 different users and which is designed for wooden door. Fingerprint door lock M600 is made of stainless steel 304. Stainless steel (Grade 304) is designed to absorb more energy without breaking. The stronger resistance to corrosion keeps a longer life time for the finish. Two sensitive IR detectors are installed beside the fingerprint sensor, which make the sensor activate automatically when a finger is placed on it. Integrated with the 3rd-generation of fingerprint algorithm, the sensor can identify the fingerprint faster and clearer. There is a lock status indicator on the inside plate. Through the LED digital tube display which is installed in the battery case, users can know the status of the lock easily. The fingerprint door lock M600 also has the lock failure indicator. If the users had entered the wrong password, the lock failure indicator will activated immediately. The alarm will warn you to input the correct password and fingerprint again. The users also no need to worry about the battery has run down. Because the fingerprint door lock M600 has the low battery alarm. When the battery is running out of the stuff, the alarm will activated to remain you to change the battery. The lock can install 4 dry batteries in the main unit, which can provide the lock can run 8,000 ~ 10,000 times to unlock the door.