<p>1. Indoor and outdoor temperature display (\u2103\/\u2109)</p> <p>2. Indoor and outdoor humidity display</p> <p>3. Record the maximum\/minimum temperature and humidity;</p> <p>4. Comfort switch window guidance There are hook holes and brackets on the back, which can be wall-mounted or used standing.</p> <p>5. Low battery indicator : the top button and the white backlight last for 5 seconds;</p> <p>Indoor temperature measurement range: -10\u2103 to 50\u2103</p> <p>Outdoor temperature measurement range: -20\u2103 to 65\u2103</p> <p>Indoor humidity measurement range: 20% to 95%RH</p> <p>Outdoor humidity measurement range: 1% to 99%RH</p> <p>Effective sensor connection distance: 80 meters in open environment</p> <p>Colour:black+white</p> <p>Material:ABS</p> <p>Package Contents:</p> <p>1 x Temperature And Humidity Sensor (3 AAA batteries not included in delivery) </p> <p>1 x Transmitter (2 AA batteries not included in delivery)</p> <p>1 x Multilingual instructions</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection 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.</p>