Digital thermometer T-meter twin External double-display Thermometer Large double LCD display simultaneously showing aquarium & ambient temperature. Selectable temperature unit: ºC or ºF. With adhesive tape at back side for easy putting on aquarium tank Ambient: –10 ~ +50 ºC (–14~+122 ºF) Aquarium: –50 ~ +70 ºC (–58 ~ +158 ºF) Resolution: 0.1...