This multi-screen device is suitable for monitoring indoor and outdoor temperature and humidity at the same time, in Celsius or Fahrenheit. It also stores for recall the maximums and minimums for both temperature and humidity. Supplied with 1.5m-long remote outdoor probe. Temperature range -40°C to +50°C. Dimensions 11cm high x 7cm wide x 22mm thick. Suitable for wall or desk mount. Powered by one ‘AAA’ battery (included). Easy to use. Full instructions included.