DSC Wireless Outdoor Siren Replacement Battery is a D-size, 3.6 volts, Lithium Thionyl Chloride Battery used to power the Wireless Outdoor Siren. The estimated battery life (assuming proper use) is 3 years.

Whether you are replacing or installing the DSC Wireless Outdoor Siren Replacement Battery in the outdoor wireless siren, you must follow certain directions.  Failure to follow instructions during this installation process may damage your battery and your siren may not work.

When dealing with this certain type of battery, it must go through a depassivation mode.  The purpose of this is to pre-condition the battery. So that it won’t drop below the minimum voltage of the device once a load has been applied.  This is done by advancing the discharge past the point of the voltage dip.

Before connecting your battery in the siren, please read and follow these instructions:

Hold the tamper switch down and plug in the battery (continue holding tamper)
Continue to hold the tamper switch down for 10 seconds and then release
Once the tamper switch releases, the strobe lights on the Outdoor Siren Replacement Battery will flash different patterns. This is to indicate that it is in depassivation mode.

When de-passivation is complete, the strobe lights will shut off. The siren will then begin to beep three (3) times every five (5) seconds. (Note: It can take the unit up to 30 minutes to fully de-passivate.  If at the end of 30 minutes the unit could not de-passivate the battery, the unit will stop trying. Then will begin to beep once every (5) second.  The battery needs a replacement when this happens.
When the system begins to beep 3 times every 5 seconds, then press and release the tamper switch on the unit.  At this point, the Replacement Battery should flash the strobe lights and beep six (6) times.  The unit is now in the normal power-up stage.
The DSC Wireless Outdoor Siren Replacement Battery is now ready to be enrolled into your DSC Wireless Alarm Panel, or returned to service.