SHP-DH538 - How to change the master 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 current master PIN code (default is 1234) + *
    • Success : Ding Dong Deng
    • Fail : DingdongDingdong
  5. Press 0 + * : Ding dong
  6. Enter the new master PIN code (4-12 digits) + *
    • Success : Ding Dong Deng
    • Fail : DingdongDingdong