TR110D 1.3-speed switch. 2.on/off switch. 3.heating-cooling switch 4.electric valve controlled by thermostat 1.Suitable for temperature ... in hotels and indoors.2.With power on/off switch. 3.Manual fan-speed control with three positions selection: low,middle,high ... (Fan valve30, 60, 90). 4.Fans are automatically by temperature switch. 5 ...