Low Voltage Thermostat, Terminal Designations G, R, Y, System Switching Cool-Off, Fan Switching Auto-On, Automatic Changeover No, Dual Transformer Compatible No, Power Method Hardwired, Voltage 20 to 30V AC, 750mV Compatible No, Mounting Horizontal or Vertical, Height 5 in, Width 3 1/4 in, Depth 1 5/16 in, Color White, Control Range 50 Degrees to 90 Degrees F, Features Mercury Free, For Use With Conventional Cool-Only System. This item has been restricted from sale in the following state (s): []