Press the MAX/MIN button to view the highest and lowest temperature and humidity readings recorded over the last 24 hours.
If your model supports "Sound Control" mode, you can wake the screen with a clap or a light tap on the table. Color Screen Calendar Model 2159t Instructions
Ensure the unit is away from direct sunlight, drafts, or heat sources like radiators. Press the MAX/MIN button to view the highest
Press the ALM button once to view the alarm time, then press UP to toggle the alarm icon on or off. Press the ALM button once to view the
Replace the batteries or switch to the USB power cable.
Use a paperclip to press the RESET hole on the back of the unit to restore factory settings. If you'd like to dive deeper into specific features: Setting recurring weekly alarms Understanding the humidity comfort index Optimizing battery life for travel