Model MS7A AC-AC Submersible Displacement Transducer with free unguided armature, ranges from ± 0.04 to ± 0.50 in and an accuracy of ± 0.25% of full scale. Outputs sensitivity of 2 mV/V/0.001in. Supply that can operate from either a 5 vdc calibrated power supply or a 1 V to 7 V RMS acceptable power supply. Unit can operate from a temperature of -4°F to +257°F and is constructed with a stainless steel body and has a 6 ft long hermetically sealed waterproof cable