Features

1) Indoor temperature (°F or °C)
2) Remote temperature (°F or °C)
3) One XT100 included
4) Can  receive up to three remote sensors (XT100) . Only one is included with this unit. 
5) Free standing
6) Min. and max. memory
7) Manual set time, calendar date 
8) 12 or 24 hour time mode
9) Synchronized instant reception
10) Flip out desk stand or wall mount
11) size 74x92X28(RX),65x48x28(TX)
 
Specifications:
 
1) Indoor temperature range: -20°C ~ +60°C
2) Remote temperature range: -40°C ~ +65°C
3) Temperature accuracy: +/-1.0°C
4) Power requirements (receiver): 2 x ""AA"" alkaline batteries (not included)
5) Power requirement (remote): 2 x ""AAA"" alkaline batteries (not included)
6) Transmission frequency: 433.92MHz 
7) Transmission range: up to 30 meters (100 feet) in free open air
8) Minimum 1 years battery life for outdoor sensor(Use alkaline battery)
9) Minimum one year battery life for indoor receiver(Use alkaline battery)