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How to replace Visonic Powermax / Powermaster siren batteries.
Note: Ensure your alarm system is disarmed prior to opening the siren cover to replace the bttery.
1. Disconnect the battery pairing loom from the siren and connect the new batteries to it.
2. Using a screwdriver, short out the 2 small pins where the loom connects for a few seconds
3. Reconnect the pairing loom to the circuit board and close the siren cover.
4 Arm and disarm the system to clear the 'S01 LOW BATTERY' message.
You can check for other system troubles by pressing the OK button on the display repeatedly..
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