3 Channel Wireless Weather Station with Clock. LCD Display is vivid and colorful. Holds up to 3 channels. Indoor Temp Range: 32 degree F/122 degree F and 0 degree C/50 degree C. Outdoor Temp Range: -4 degree F/140 degree F and -20 degree C/60 degree C (alkaline batteries) -40 degree F/140 degree F and -40 degree C/60 degree C (lithium batteries). Day of the week calendar available in 7 languages. Wireless remote sensor has a 200 ft. range.