Instructions for operation: 1. Set startup temperature/humidity: the "up" button once to display the starting temperature(humidity). Long the "up" button for about 3 seconds,The required temperature(humidity) can be set by the up and down keys 2. Set the stop temperature/humidity: the "down"button once to display the stop temperature(humidity). Long the button for about 3 seconds and the stop temperature(humidity) number flashes. The required temperature(humidity) can be set by the up and down keys 3. Temperature/hunidity correction: "up" and "down" button at the same time. Colour:Photo Color Material:plastic Package Contents: 1 x thermostat Only the above package content, other products are not included. Note: Light reflection 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.