Lacrosse Technology Wireless Thermometer WS-7034TWC Lacrosse Technology Wireless Thermometer WS-7034TWC IN & OUT Temp MIN & MAX Temp Dimensions: Receiver: 6" x 2.5" x 1", Sensor: 5.5" x 1.6" x 1" All Features: Wireless outdoor temperature (°F or °C) Monitors indoor temperature (°F or °C) Records MIN/MAX temperature with time and date of recording Time display (manual setting) 12/24 hour time display Wall hanging or free standing Detachable stand included Can receive up to 3 sensors Specifications: Wireless outdoor temperature range: -39.8°F to +156.2°F Indoor temperature range: 32°F to 140°F Temperature accuracy: +/- 1.5°F Temperature resolution: 0.2°F Transmission range: Up to 330 Feet Transmission frequency: 915 MHz Compatible sensors: TX29U-IT Power Requirements: Receiver: 2"AAA" Alkaline batteries, Wireless sensor: 2 "AA" Alkaline batteries