Wafu WF-019 Wireless Remote Control Electronic Smart Lock Keyless Door Lock. 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. Three unlock modes optional: Remote control unlock, indoor button unlock.
Easy installation on all kind of doors, very convenient. Lock size: 15.5 x 8 x 3.5cm. Controller size:6 x 3 x 1cm. 1 Bag of Mounting Screws. Note: 019 no touch unclock function, 010 and 011A have this function.The link video showing is 010 model.