The WS1 is a Wireless Kit for home/office use, it includes a Wireless Keypad+ a Wireless Bolt Lock + a Wireless Exit Button + 2pcs Remote Transmitters + 5pcs Keyfobs. 
433MHz Rolling Code of encryption algorithm and the split design guarantee higher-secure. 

> All wireless, no need wires any more
> Easy for installation and operation
> Open times: 16,000 times for lock, 10,000 times for keypad
> 433MHz Rolling Code technology
> Ultra low power consumption
> With two remote transmitters
> 100 PIN/card users
> 4~6 digits PIN, 125KHz EM or 13.56MHz Mifare card optional
> Communication distance: 30M max
> Open the lock by keypad, wireless exit button and remote transmitters
> Battery life: more than 12 months