SHP-DH538 - How to register a user PIN code

1. Unlock and open the door
2. Take the battery cover off
3. Press the [REG] button to start registration : Ding Dong
4. Enter the master pin + *
   • Success : Ding Dong Deng
   • Fail : DingdongDingdong
5. Enter 1 + * : Ding dong
6. Enter 1 + * : Ding dong
7. Enter a new user PIN code + *
   • Success : Ding Dong Deng
   • Fail : DingdongDingdong
8. Repeat with another user PIN code if registering other user PIN codes OR press the [REG] button to exit registration