Miller MWTA12 Sensing Edge Transmitter with Audible Low Battery Alarm

MWTA12 Sensing Edge Transmitter with Audible Low Battery Alarm -- Includes a built in Audible Alarm feature that activates when the battery has only 25% of its life remaining, indicating the battery should be replaced. The alarm sounds for 5 to 10 seconds at 1 to 2 minute intervals. For use with MWR02 or MWR03 receiver.