Indoor convenient installation. Just attach M1 to indoor Anti-theft lock inside.
Keyless, no matter indoor or oudoor, using Mi home app can control the switch.
Child lock. Indoor touchable switch is convenient and safe.
Customized security chip for every user. Safe enough.
App Virtual Key can be set and distributed to your family in a long distance easily.
Coupon:DHMWIISM,final price $105.99