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If the battery is low, the receiver’s channel two relay will latch until reset. In the event of an alarm, the transmitter will activate channel one of the DXR-702, and the receiver’s relay will close for four seconds. IMPORTANT: When the DXR-702 is connected to a security panel it is very important that the central station monitoring the location is advised of which zone(s) will report a carbon monoxide alarm. In a typical installation, the receiver is connected to an alarm control panel. The re