The item is easy to be programmed from the user beware of the connection diagram just 4 cables needed ( +12v , Gnd , and the other two COM and NO works as a switch when the unit is activated with the fingerprint , password or card makes a bridge between this two . There are other functions too but the wiring diagram that Banggood provides is a useless crap. The finger print detector is very fast less than 1 sec and the door opens immediately. To put the password you have to spent some time and to have some knowledge usually to put the password you need over 10 seconds. The card detection is a disaster over 5-10 seconds with the card touching on the reader and even so you have to try 3-4 times but at the end it detect it takes about 30 secs or more. But if you want a unit easy to be programed and to use it primary with the fingerprint this is what you want to buy it can save more than 3 different fingerprints from any user and it is easy to installation just 4 cables (to use it only with an electric lock) Its made from plastic and the buttons are touch but you have to put some force to activate them.

The item is easy to be programmed from the user beware of the connection diagram just 4 cables needed ( +12v , Gnd , and the other two COM and NO works as a switch when the unit is activated with the fingerprint , password or card makes a bridge between this two . There are other functions too but the wiring diagram that Banggood provides is a useless crap. The finger print detector is very fast less than 1 sec and the door opens immediately. To put the password you have to spent some time and to have some knowledge usually to put the password you need over 10 seconds. The card detection is a disaster over 5-10 seconds with the card touching on the reader and even so you have to try 3-4 times but at the end it detect it takes about 30 secs or more. But if you want a unit easy to be programed and to use it primary with the fingerprint this is what you want to buy it can save more than 3 different fingerprints from any user and it is easy to installation just 4 cables (to use it only with an electric lock) Its made from plastic and the buttons are touch but you have to put some force to activate them.

The item is easy to be programmed from the user beware of the connection diagram just 4 cables needed ( +12v , Gnd , and the other two COM and NO works as a switch when the unit is activated with the fingerprint , password or card makes a bridge between this two . There are other functions too but the wiring diagram that Banggood provides is a useless crap. The finger print detector is very fast less than 1 sec and the door opens immediately. To put the password you have to spent some time and to have some knowledge usually to put the password you need over 10 seconds. The card detection is a disaster over 5-10 seconds with the card touching on the reader and even so you have to try 3-4 times but at the end it detect it takes about 30 secs or more. But if you want a unit easy to be programed and to use it primary with the fingerprint this is what you want to buy it can save more than 3 different fingerprints from any user and it is easy to installation just 4 cables (to use it only with an electric lock) Its made from plastic and the buttons are touch but you have to put some force to activate them.