Mannix EMR963HG WIRELESS Thermo-Hygrometer w/ Remote Sensor Monitors temperature & humidity from up to 90 feet away F and C selectable Up to three sensors may be used with base station Includes one remote sensor Jumbo display Min/max memory Trend information Comfort indicator Specifications: Indoor & outdoor temperature range: -58 to 158 F (-50 to 70 C) Indoor & outdoor humidity range: 25% to 90% Temperature resolution: 0.2 F (0.1 C) Humidity resolution: 1% Transmitting range: up to 90 ft. Transmission interval: approximately every 30 seconds Transmission frequency: 433 MHz Base station - 2 “AA” batteries; sensor - 2 “AA” batteries Dimensions: base - 4.5” x 4” x 0.75”; sensor - 4” x 2.75” x 0.75” Weight (w/o batteries): base station: 5.5 oz.; sensor: 2.2 oz. Supplied With: 1 wireless temperature/humidity sensor Model THGR268 All batteries