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CPU Tamper Open

This means that one or both of the Abbra control panel's tamper switches are open. The

Abbra has two tamper switches, and both must be closed (held down) or a CPU Tamper

alarm occurs. This is to protect against the control panel being ripped off the wall or otherwise

tampered with.



One tamper switch is located inside the battery compartment. It looks like a small

metal spring, just below ("south of", not covered by) the battery. It is next to the

screw that holds the wall mounting bracket in place. When the battery compartment

cover is screwed on, the spring will be held down.



The other tamper switch is on the back of the control panel, where the wall

mounting bracket goes. There is a slot or oval-shaped hole on the back of the

control panel, close to the center, and the tamper switch is a small metal flap inside

it. The wall mounting bracket has a peg that fits into the hole, and holds down the

switch. The Abbra also comes with a length of plastic that fits into the slot, to be

used if you prefer not to mount the control panel on a wall.

CPU Tamper Alarm

This always occurs at the same time as the CPU Tamper Open message, and simply

indicates that the CPU Tamper is an alarm, and will be reported to the monitoring center. It is

resolved in the same way as CPU Tamper Open, by making sure both tamper switches are

held down.

Zone Tampers (Z01 Tamper Open, Z02 Tamper Open, etc.)

Each Abbra wireless sensor also has a tamper switch. If the sensor is physically opened (the

cover is removed), then it will trigger a tamper alarm and a trouble condition on the control

panel. The number indicates which sensor is being tampered with. For example, Z01

indicates that the sensor on Zone 1 has been tampered with. Check the sensor and ensure

that the cover is securely in place. The exact location of the tamper switch varies by sensor,

but it will always be held down if the cover is securely in place.

CPU Low Battery

This indicates that the backup battery in the control panel is either low or missing. Open the

battery compartment, and make sure the battery is properly connected. The battery

automatically recharges from the panel while it is connected to AC power, but may need to be

replaced after several years of use. Use only an Abbra or Visonic battery, obtained from the

store where you purchased the system.

Note that opening the battery compartment triggers a tamper alarm. It will go away after you

close the cover again, as described above.