1) Indoor temperature (°F or °C)2) Remote temperature (°F or °C)3) One XT100 included4) Receive three remote sensors5) Free standing6) Min. and max. memory7) Manual set time, calendar date8) 12 or 24 hour time mode9) Radio controlled time10) Synchronized instant reception11) Flip out desk stand or wall mount12) size 74x92X28(RX),65x48x28(TX)Specifications:1) Indoor temperature range: -20°C ~ +60°C2) Remote temperature range: -40°C ~ +65°C3) Temperature accuracy: +/-1.0°C4) Power requirements (receiver): 2 x "AA" alkaline batteries (not included)5) Power requirement (remote): 2 x "AAA" alkaline batteries (not included)6) Transmission frequency: 433.92MHz7) Transmission range: up to 60 meters (200 feet) in free open air8) Minimum 1 years battery life for outdoor sensor(alkaline battery used)9) Minimum one year battery life for indoor receiver(alkaline battery used)