Instructions for operation: 1. Set startup temperature/humidity: Press the "up" button once to display the starting temperature or humidity. Press and hold the "up" button for about 3 seconds. The required temperature or humidity can be set using the up and down buttons. 2. Set the stop temperature/humidity: Press the "down" button once to display the stop temperature or humidity. Press and hold the "down" button for about 3 seconds until the stop temperature or humidity value flashes. Adjust the desired value using the up and down buttons. 3. Temperature/humidity correction: Press the "up" and "down" buttons simultaneously. Color: Photo Color Material: Plastic Package Contents: 1 x Thermostat Only the above package content is included; other products are not included. Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3 cm.