Dialing button for setting the temperature: The place the finger points to is the current temperature value.ON/OFF Switch for System: Press ON/OFF Key to turn on/off of the thermostat.Working Mode Switch: Press HEATCOOL key to switch the heating/Cooling mode.Fan Speed Key: L-M-H, that is, Low speed-Moddle speed-High speed, Wind valve controller does not have this fLJnction.MT01 series of thermostats are usually used on the commercial, industrial and civil constructi ons, which can control the fan l of -conditioning, water valve and wind valveect. It can make the temperature balance in the setting range in the location, and all switches are manual switch. Very simple to manipulate.Colour: whiteMaterial: plasticPackage Contents:1 x Temperature regulator1 x English manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.