<b>Note: 1. Please use a good alkaline battery, do not use rechargeable battery. 2. Please install outdoor transmitter (sensor) power supply first, and then install indoor receiver (display) power supply.</b><br> 1. Solar power support, saving energy and protecting environment <br> 2. Can both indoor and outdoor temperature test<br> 3. Can water temperature test<br> 4. Radio controlled time<br> 5. Adjustable calendar support<br> 6. Alarm clock support, with snooze function<br><br> <b>Specifications:</b><br> 1. Indoor Temperature: 0°C~50°C; 32°F~122°F<br> 2. Outdoor Temperature: -40°C ~ 60°C; -40°F~140°F<br> 3. Temperature accuracy: ±1.0°C<br> 4. Material: ABS<br> 5. Data interval: 48S<br> 6. Size: sensor: 6" x 3.5" x 3.5" (150 x 88 x 88mm); Receiver: 5" x 3"x 1" (125x75x25mm)<br> 7. Weight: 0.62Pounds (0.28Kg)<br> 8. Power: Receiver needs 2 x AAA 1.5V Alkaline; Transmitter needs 2 x AA 1.5V Alkaline (Batteries NOT Included)<br> 9. Remote distance: 300Feet (100 Meter)<br> <b>Note: </b><br> 1. Please use a good alkaline battery, do not use rechargeable battery. <br> 2. Please ALWAYS install outdoor transmitter (sensor) battery first, and then install indoor receiver (display) battery. Otherwise can not connect and meter not display.<br> 3. Before the indoor display displays the data received from the outdoor transmitter, please do not press any button. The operation can be set only after the data is displayed. <br> 4. If the display cannot display the temperature from the outdoor transmitter, please check whether the distance between the outdoor transmitter and the display is within the allowable range. <br> 5. Equipped with installation accessories and assembly drawings, users can install the transmitter in a suitable outdoor location after the installation. <br> 6. Please Kindly Know: Batteries are not included in the package due to Aviation Security Check. Sorry for any inconvenience caused. <br>