Note: The User Manual is Common Version. This product is 433MHz not 315MHz, and without touch lock/unlock function. 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. *Tiger lock method, more safe and stable. *No keyholes outside, there is no way for thieves. *Add USB external power source function. Make sure the lock works when battery was dead. (battery not included) *Easy installation on all kind of doors, very convenient. Specifications: Host Machine: Power Supply: 2*AA batteries (not included) Transmission Frequency: 433MHZ(500KHZ) Operation Range: Within 15m Unlock Mode: Remote control unlock & indoor emergency button unlock Color: Blue+Gold Item Size: 15.5*8*3.5cm Item Weight(without accessories): 529g 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. 1040g / 2.3lb Package List: 1* Lock 1* Lock Body Holder 1* Lock Catch 1* USB Power Cable 4* Remote Keys 1* Bag of Mounting Screws 1* User Manual(English)