General description Wireless indoor and outdoor thermometers provide accurate temperature and humidity readings. The device features a backlit touchscreen that displays current indoor and outdoor conditions, including trend arrows and maximum and minimum records, allowing you to stay informed about changing environmental conditions. Technical specifications Accuracy: ±1.1°C for temperature Humidity accuracy: ±2~3 % Temperature measurement range: down to -35℃ Wireless range: up to 60m/200ft Other information Cold-resistant and waterproof design Includes a rechargeable lithium battery Can track environmental conditions at up to four locations with the purchase of two additional remote sensors