LCD screen display: Intuitive display of current temperature and humidity. Flexible placement: Can be suspended, can be placed in the home of any table. Threshold alarm: Temperature/Humidity exceeds a certain threshold, an alarm is generated. Smart scene linkage: Interconnect with other smart home devices, such as IPC and light bulbs. History record: Can record temperature and humidity changes over a year. Colour:White Material:ABS Power Supply: 2 x AAA batteries(Not included batteries) Package Contents: 2 x Temperature 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.