oria,indoor outdoor thermometer with 3 remote sensors, weather forecast station, digital hygrometer thermometer, temperature humidity monitor with lcd backlight, suitable for home, office, warehouse oria <p><strong>specifications:</strong><br /> 4 buttons: ch, °c/°f, 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°c~+50°c<br /> outdoor temperature range: -30°c~+60°c<br /> in & out humidity range:20%~90%<br /> frozen point alert:<br /> when outdoor temperature is between -3°c~+1°c, snow and exclamation mark symbols will flicker.<br /> when outdoor temperature is lower than -3°c, 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>