Features: Self powered, no external power supplyrequired1-5VDC output, connects directly toautomation systemsOne sensor for three ranges, jumper selectedLow cost, replaces digital status relaysPanel mountingDescription: The CS Current Sensor is a solid state transducer for measuring the current in fans, pumps and other HVAC equipment.Select one of three ranges by moving a jumper onthe device to operate over 10A,20A and 50A. This sensor outputs 0-5V directly and requires no power supply. Clamping / Split Core Current Transformer is designed to provide a low cost method to monitoring electrical current.A unique hinge and locking snap allows attachment without interrupting the current-carrying wire.High secondary turn will develop signals up to 10Vac across a burden resistor Specification: Power Supply : Not required Operating Temperature : -20 ~ 60 OC Operating Humidity : 0 ~ 95% RH CT Material : ABS (UL94)CT Ranges : 10, 20, 50Amp, jumper selected Output Signal : 1~5VDC; porportional to average current Accuracy : 2% Plastic housing : Flammability rating UL94V0 file E194560 Window Size : 0.4 (10 mm) Current Range* : 0.25 - 40A AC Output : 300 mV @ 20A AC Ratio Error** : 0.5% from 0.25 to 40A AC (typical) Phase Error** : 1.5 from 1 to 40A C 2 from 0.25 to 1A AC