WAFU Wireless Remote Control Electronic Lock Invisible Keyless Entry Door Lock with 4 Remote Controllers

Features: *No lock hole design, it completely abandons the traditional key and lock, in the fully opened and closed by remote control, realized the real security. *Extended antenna, stronger signal, safer and more responsive. *Add USB external power source function. Make sure the lock works when battery (not included) was dead. *Two unlock modes optional: Remote control unlock& indoor button unlock *Easy installation on all kind of doors, very convenient. Specifications: Host Machine: Power Supply: 2*AA batteries(not included) Transmission Frequency: 315MHZ( 500KHZ) Operation Range: Within 15m Unlock Mode: Remote control unlock& indoor button unlock Item Size:15.5*9.5*3.5cm Item Weight(without accessories): 534g Remote Controller: Power Supply: Lithium button battery Standard Number: 4 (included) Max Controller Number: 16 (not included) Function: Lock &unlock Item Size(Each):6*3*1cm Item Weight(Each): 25g Package Information: Package Size: Approx.22.2*19.8*5.8/8.47*7.8*2.28in Package Weight: Approx.1194g/2.63lb Package List: 1* Lock 1* Lock Body Holder 1* Lock Catch 4* Remote Keys 1* Bag of Mounting Screws 1* User Manual(English)