Pinpoint Wireless Thermometer Sensor; 2-1/2" x 3-1/2"

Remote sensor transmits temperature readings as far as 100 ft awayUse wireless thermometer with up to four remote sensors for multiple temperature readingsDigital thermometer accurately displays aquarium water temperature in F or CRemote sensor probe accurately measures and sends temperature readings via radio wave signal up to 100 ft away. LCD monitor displays C or F. Additional remote Pinpoint Thermometer Sensors available to monitor independent temperature readings in up to 4 aquariums. Sensor and monitor each use 2 AAA batteries, not included.Pinpoint Wireless Thermometer: 2-3/4" x 5"; w/one sensor Pinpoint Thermometer Sensor: 2-1/2" x 3-1/2"Please click on "More Information" for specifications.