Calex 829R-115 Line Sensor

Calex 829R-115 Line Sensor is a stand-alone AC line-voltage monitor with an internal SPDT relay that energizes when the sensed mains voltage sits inside a user-adjustable window. It accepts a nominal 115 VAC input and covers 50–440 Hz operation, with adjustable trip points for 115 V systems of 115–120 V to 140 V (HI) and 90–110 V (LO), and a fast response of up to 100 ms to voltage changes (20 ms dropout on loss of line). The relay output is rated for 1 A at 26 VDC or 0.5 A at 115 VAC, with 500 VRMS isolation from the line and insulation impedance of 100 MΩ, and the unit consumes up to 3 W from the AC line while operating from 0 °C to +70 °C. This compact device measures 3.75 in x 1 in x 2.7 in (95.3 mm x 25.4 mm x 68.6 mm) and weighs roughly 9 oz (277 g).