Theo&Cleo LCD Large Screen Digital Indoor Outdoor Centigrade to Fahrenheit Thermometer Hygrometer Meter with Dual Sensors Memory Digital LCD display simultaneously shows the current indoor/outdoor temperature and humidity (only indoor). The cable with probe is for measurement of the indoor/outdoor temperature and indoor humidity. Switching temperature display: Centigrade to Fahrenheit. Switch is on the back. Checks the maximum or minimum temperature and humidity by pressing the MAX/MIN switch. The hole and stand on the back of the thermometer hygrometer meter make it can be used on the wall and table.