Wireless 8 Channel Thermometer/Hygrometer with three sensors

Feature:
1. Indoor temperature (ºF or ºC) and humidity
2. Display outdoor temperature and humidity in 8 locations
3. Outdoor(CH 1,2,3) and indoor temperature/humidity HI/LOW alarm
4. Min/Max records of temperature and humidity
5. Temperature and humidity manual calibration
6. Temperature and humidity trends indication
7. Comfort level indication
8. Can receive up to 8 sensors
9.With dip switch to set up and fix 1-8 channels
10.Long searching function after communication is lost
11.Free Standing or hanging
Specification:
Indoor temperature range :0~60ºC
Outdoor temperature range:-40~60ºC
Temperature accuracy:±1ºC
Humidity range:10%~99%
Humidity accuracy:±5%
Transmission frequency:433MHZ
Transmission range:100meter(300feet) in open area
Transmission interval: 60 seconds