Wireless outdoor and indoor temperature (°F or °C) Records min. and max. temperature 12 or 24-hour time display Perpetual calendar Time alarm with snooze Can receive up to 3 sensors Wall hanging or free standing Included thermometer transmitter WH-6 Synchronized instant reception Cartoon animated "Wendy the Weather Wizard" display Low power consumption (over 2 year battery life for remote sensor) Specifications: Wireless outdoor temperature range: -31°F to 149°F Indoor temperature range: 32°F to 122°F Temperature accuracy +/- 2.0°F Transmission range: up to 300 feet Transmission frequency: 433MHz Power requirements: Receiver: 2 x AAA alkaline batteries (not included) Wireless sensor: 2 x AAA alkaline batteries (not included)