✦ Emergency power
External power can be used as the backup power if battery drain
✦ Battery life last up to 18 months
4pcs batteries last for 18 months
✦ Emergency key
Open the door with the mechanical key when battery drain
✦ Low battery alert
When battery voltage is lower than 4.8v,buzzer will make alert while each unlocking. it can keep 50 times unlocking until batteries dead
✦ Violence anti-theft alert
It will alert for any violence break-in
✦ Dual electric system design
In the even of failure of one circuit system,the other circuit system still operates normally.
Such as when fingerprint fails,user still can unlock the door by password
✦ Lift-up the handle for the deadbolt
The user can lift-up the handle from outside to activate the deadbolt
The deadbolt also can work from indoor when lift-up the handle
✦ Compatible with 99% doors including wood/copper/stainless steel door
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