Pulse evaluation system PM-1

Connects directly to channel 4 of XR440 Data Logger (this is the only XR440 accessory which connects to a specific channel). Internal lithium battery powers module for over 10 years. Module has four color coded 12" leads. Two leads connect to a contact closure (PACE Watt Hour Sensor, gas meter, rain gage, etc.) and two leads connect to the XR440 Data Logger.