System Sensor SYS-EOLR1 Power Supervision Module For 4 Wire Smokes

System Sensor SYS-EOLR1 Power Supervision Module For 4 Wire Smokes Model EOLR-1 is an epoxy encapsulated single pull single throw (SPST) normally open relay that is activated by 9 to 40 VDC. This relay can be used as an end of line device in fire alarm systems, e.g., to supervise power supplies. The System Sensor SYS-EOLR1 Power supervision module is a single pull single throw (SPST) normally open relay that will be activated by voltages between 9 to 40 VDC. You'll basically use this as a power supervision relay. Specifications Operating Voltage: 9 to 40 VDC ( 9 to 35 Vrms for unfiltered full wave rectified supplies ) Operating Current: 20 mA max. Operating Temperature Range: –22ºF to 140ºF (–30ºC to 60ºC) Humidity: 10 to 93% RH non-condensing Wire Length: 8″ min. (203 mm) Dimensions: 0.91″H x 1.65″W x 1.22″D (23 mm H x 42 mm W x 31 mm D) Contact Ratings: 120 VAC 0.5 A max. (resistive load) 30 VDC 3A max. (resistive load)