Thomson Siren Battery for Thombox 510718, 510717, 512742 external alarm Bell Box
$45.35
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DSC Alexor Siren Bell Box Battery Alarm WT4911BATT Replacement for WT4911B
$34.68
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About this item
DSC Alexor WT4911B Bell Box Siren Battery. Compatible with the following Alexor alarms: DSC WT4911B. P/N: WT4911BATT. The original issued 14.5A battery should be replaced every 2-3 years to ensure your alarm has enough battery power to sound the alarm in the event of a power cut.
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