Voltage: DC 5V; LED indicator: Blue Wireless Connection: 2.4GHz 802.11b/g Size:7.15cm x 4.15cm x 2.2cm/2.87inch x 1.63inch x 0.86inch Temperature measure range: -10~65 Temperature correction range: -2~2; Humidity measure range: 0% ~ 99%RH; ZigBee Temperature And Humidity Sensor With Backlight/Real-time monitor/Work With Zigbee Gateway Temperature And Humidity State, The display,real-time display of the current temperature and humidity All Weather Test And Alarm Instantly sends notification when the data of temperature and humidity goes beyond preset range. Smart Linkage With Other Devices Can be used as trigger for other devices.You can create the instruction like this: If the Humidityis 68% then turn on the humidifier. If Temperature 28 then turn on the air conditioner. Real-time monitor High accuracy(humidity accuracy:5%RH, Temperatureaccuracy:1), supporting manual correction. Backlight Supported, the button, the backlight wil be turned on and last for about 10 seconds. Data Storage And Export,most accurate enough to view hourly data, check the highest and lowest values at any hour or day and data can be exported as files Rotating Storage Type-C, Can be placed on the desktop/hanging /UseType-C data cable. Multi Power Methods,With our C-smart series switches or sockets,no data line is required. More Functions,C And F Switch/Offline Notification/Share Device/Create Group Color: Black Material: ABS Package Contents: 1 * Zigbee temperature and humidity sensor Only the above package content, other products are not included. 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.