Pro 1000 Horizontal Non Programmable Thermostat, 20-30Vac or 750mV, Heat-Off Switch Positions, Manual Changeover, 1 Heat/1 Cool, Selectable Heat Temperature Setting: 40-90 Degree or 50-99 Degree, 5-90% RH Non Condensing Operating Humidity Range, Dual Powered: Battery or Hardwired, Premier White