Tamper switch
From Zenitel Wiki
Assembly instruction on Tamper Switch for IP Vandal Resistant Substation TKIE
Step 1: Remove the two nylon nuts shown below
Step 2: Attach the supplied spacers
Step 3: Mount the tamper switch board
Step 4: Move the button GND wire from the the TKIE board to the tamper switch board
Step 5: Use the supplied wires to connect GND and Input 3 as shown below