Features:Measure indoor and outdoor temperature and humidity.433 mhz remote transmission of outdoor temperature.A variety of functions: alarm, snooze, calendar, weather forecast, moon phases and comfort index.2 Select temperature units: Celsius ( C) or Fahrenheit ( F).Suitable for garage, office, living room or garden use.With bracket for easy use.Specification:Material: ABSMeasuring indoor temperature: 0 C ~ 50 C / 32 ~ 122 FOutdoor Temperature Measurement: -25 ~ 70 C / -13 ~ 158 FTo measure humidity: 20% ~ 95% rhTransmitter battery: 2 * 1.5 v AAA batteries (not included)Receiver battery: 2 * 1.5 v AAA batteries (not included)Transmitter size: 9.5 * 6 * 2.5 cmTransmitter Weight: 67 gramsReceiver Size: 12.5 * 11.5 * 2 cmReceiver Weight: 127 gPackage Size: 12.5 * 14 * 10 cmPackage weight: 302 gPackage included:1 * Transmitter1 * Receiver1 * User Manual