<br><b>Always know your weather!</b> <br> <br><b>Tips:</b> <br>1. The size of the manual is 10.5cm*16.5cm ( 4.2in*6.5in ), and the font size is normal. If the manual is too small for you, please contact us through the Amazon system and we will send you the PDF version of the manual. <br>2. There are two ways to supply power to the display: <br>●Battery powered <br>It cannot be adjusted to the constant light mode. After 15 seconds of no operation, the display automatically changes to the backlight mode. Because in the constant light mode, the battery will run out after 15 hours, so the backlight mode is automatically adjusted to save power <br>●Power supply <br>The package is equipped with a charging cable. If the power cord you received does not fit, please send the photo to us through the Amazon system, and we will replace it for you free of charge.<br>The weather station can be equipped with up to 3 outdoor sensor (only one is included in the package). <br><b>1. When connecting the outdoor sensor and the display for the first time, please press the "data transmission button" on the back of the outdoor sensor. 2. Make sure that the channel number displayed on the display is consistent with the channel number of the outdoor sensor.</b>