Originally Posted by
phil alvirez

Just a suggestion, IF you have an OEM siren (maybe not), make sure before you buy the type of batteries (yes 2 IF they are the 3.6v ones) you need. Newer sirens that work in the crossfire have a (only one) 4.8v battery inside. You have to determine they type and voltage battery in YOUR specific siren. Otherwise, you'll be stocking up on batteries you may never use/need.
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