Easy to read LCD screen displays the current of indoor outdoor temperature. When insufficient electricity, there are will be shown on the LCD screen.<br> With an trend indicator temperature and daily high and low information.<br> Display stands upright for desktop use or wall mountable.<br> Includes 24 hours of high and low temperature records.<br> The display console displays the temperature, minimum and maximum temperature, which can be manually reset.<br> Technical :<br> Alarm duration: 2 minutes<br> Wireless Detection Distance: 100 Meters<br> Indoor Temperature Range: -10 ~ 60<br> Outdoor Temperature Range: -50 ~ 70 (-50 ~ 158 )<br> Humidity Range: 20% -99%<br> Accurate Temperature: +/- 1<br> Accurate Humidity: +/- 5%<br> Power Supply: Host: 3 * AAA Battery, Each Sensor: 2 * AA Battery (Not included)<br> Note:<br> 1. Do not install the reverse protective battery.<br> 2. Do not put the receiver close to metal.<br> 3. Avoid transmitter directly in the rain.<br> 4. High-quality batteries for main unit use and better transmitter.<br> 5. The sensor search mode allows you to re-sync sensors without removing and re-inserting the batteries.<br> Colour: white<br> Material: plastic<br> Package Contents:<br> 1 * Host<br> 3 * Sensor<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.