<p><strong>Specifications:</strong><br /> 4 buttons: CH, ℃/℉, MEM, LIGHT<br /> Low battery indicator<br /> Max/Min readings<br /> Weather forecast: Forecast the weather over the next 12hours.<br /> Backlight<br /> Wall hanging or table standing<br /> Indoor temperature range: 0℃~+50℃<br /> Outdoor temperature range: -30℃～+60℃<br /> IN & OUT humidity range:20%～90%<br /> Frozen point alert:<br /> When OUTDOOR temperature is between -3℃～+1℃, snow and exclamation mark symbols will flicker.<br /> When OUTDOOR temperature is lower than -3℃, snow and exclamation mark symbols will display still.<br /> </p> <p><strong>Main Unit</strong><br /> Power Supplies: 2 x AAA batteries (not included)</p> <p><strong>Transmitter</strong><br /> Power Supplies: 2 x AAA batteries each sensor (not included)<br /> </p> <p><strong>Note:</strong><br /> 1. Do not mix new and old batteries or batteries of different types.</p> <p>2. Do not mix alkaline, standard or rechargeable batteries with this product.</p> <p>3. Remove the batteries if storing this product for a long period of time.</p> <p>4. Do not dispose of this product as unsorted municipal waste. Collection of such waste separately for special treatment is necessary.</p> <p><strong>Package Included:</strong><br /> 1 x Main Unit<br /> 3 x Transmitters<br /> 1 x User Manual</p>