SHS-H505
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      SHS-H505 - 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, Ding ding
        • Failed : Dingdongdingdong (If it’s wrong)
      5. Enter a new master pin (4-12 digits) + *