Description Multiple ways to open and close, multifunctional and convenient to use. Easy and firm installation with the external mounting plate. Long service life, made of zinc alloy stainless steel, durable and without fading. Power saving mode and low battery consumption. The bottom panel design makes installation easier and firmer. Suit for office home hotel Anti-theft door Corridor door Wooden doors garage door and etc. The Automatic types can automatic locking after 20 seconds after unlock by Remote control, bring more convenience for you. Specification Type: Door Lock Material: Zinc alloy Color: Silver APP name: TTLock APP Remote control distance: 10-30M Power supply: 4 AA batteries 1.5V+1 battery 23A 12V(Batteries Not Included) Battery life: 10 times used one day can last up to 12months Operating temperature: -20~70degree Humidity between 20% and 80% Dimensions:130 x 75 x 33mm Package Includes 1 x Door Lock (battery not included) 1 x Lock body bottom pinch plate 1 x Latch seat (Inside door, outside door can be used) 2 x Remote control 1 x Screw pack