It s like the unit security door, I press room 503, and the three digit digital tube shows 503,

Updated on Security door 2024-03-09
2 answers
  1. Anonymous users2024-01-23

    Do you press 503? Is it a matrix keyboard or two keys (one plus one minus)? Make it clear!

  2. Anonymous users2024-01-22

    In addition, the group purchase of products on the virtual machine group is super cheap.

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