Robertshaw 200-501 Millivolt Stat

Robertshaw uni-line thermostat has an electrical rating of 24 volts. Low voltage at 30 VAC max and 1.0 amp max. There are electrical ratings of millivolts being set at 250-750. The thermometer is set at a range of 44 degrees to 96 degrees F. The dimensions are 2-13/16" rounded square and 1-5/16" deep. The application has 2 wires and the switch action of SPST with a positive-off lever. Dial temp ranges from 48 degrees to 86 degrees F.