Acu-Rite Wireless Indoor/Outdoor Thermometer including indoor Humidity with Sensor

Features: Outdoor temperature range with adaptor on remote: -58°F - 158°F. Min/max memory for temperature and humidity. Indoor humidity range: 20% to 90%. Main unit: 2 1/2" x 3 3/4" x 1 1/8". Sensor: 2 1/8" x 3 1/4" x 1 1/8". 3 channel capable.