ORIA Indoor Outdoor Thermometer, Wireless Temperature Monitor, Digital LCD Thermometer with Remote Sensor, Outdoor Arrow Trends (\u00B0C/\u00B0F), Min/Max Value, Tabletop and Wall-mounted Design for Home\n\n-- Strong Wireless Signal: With wireless transmitter, strong wireless signal penetration can be achieved (frequency 433 MHz), and a long transmission range (30-100 m outdoors). The signal can be received in the transmission range in a timely and fast manner\n-- Indoor Temperature & \u00B0C / \u00B0F Switch: Indoor temperature: 0~50 \u2103\uFF0832~122 \u2109\uFF09, outdoor temperature range: -30~50 \u2103\uFF08-22~122 \u2109\uFF09, at the same time the outdoor temperature also shows the temperature tendency. Temperature error is limited to \u00B11 \u00B0C\uFF082 \u2109\uFF09. \u00B0C / \u00B0F switch can be switched to fahrenheit celsius\n-- Max & Min Display: The temperature is updated in a timely manner. You can press the \""MAX / MIN\"" button to read the maximum and minim.