Dialing button for setting the temperature: The place the finger points to is the current temperature value.<br> ON/OFF Switch for System: Press ON/OFF Key to turn on/off of the thermostat.<br> Working Mode Switch: Press HEATCOOL key to switch the heating/Cooling mode.<br> Fan Speed Key: L-M-H, that is, Low speed-Moddle speed-High speed, Wind valve controller does not have this fLJnction.<br> MT01 series of thermostats are usually used on the commercial, industrial and civil constructi ons, which can control the fan coi l of air-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.<br> Colour: white<br> Material: plastic<br> Package Contents:<br> 1 x Temperature regulator<br> 1 x English manual<br> Only the above package content, other products are not included.<br> Note: Light shooting 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.