Waterproof Wireless DIY Lock Kit
> Metal design & Waterproof Keypad, can install outside
> 433MHz Rolling Code technology
> Communication distance: 50m Max
> Open/Close by Keypad, transmitter, or touch the lock
> Open times: 12000 times
> 500 PIN/card users
> 4~8 digits PIN, 125KHz EM card 
The D5 is a Wireless smart lock kit for home use, it includes Wireless Keypad (metal, waterproof) + Wireless Lock + 2pcs
Remote Transmitters + 5pcs RFID Tags.  
433MHz Rolling Code of encryption algorithm and the split design guarantee higher-secure.