Wireless Thermo/Hygro meter

Features:
1) Indoor temperature (°C or °F)
2) Remote temperature (°C or °F)
3) Remote humidity 
4) One WH2 included
5) Can receive as many as three remotes
6) Free standing
7) Min. and max. memory
8) Manual set time
9) 12 or 24 hour time mode
10) Synchronized instant reception
11) Low power consumption( over 2 years battery life for both base station and
     remote sensor)

Specifications:
1) Humidity range:  20% - 95% (+/-5% under 0 to 45°C)
2) Remote temperature range: -40 ~ +65°C
3) Indoor temperature range: 0 ~ +60°C
4)  Temperature accuracy: +/-1.0°CPower requirements Base station: 2 x "AA" alkaline batteries (not included)
Sensor : 2 x "AAA" alkaline batteries (not included) Transmission frequency: 433MHz
 Transmission range: up to 300 feet open air