Measure indoor and outdoor temperature and humidity, Celsius and Fahrenheit conversion. The highest and lowest temperature and humidity memory function. You can view historical temperature and humidity data.A maximum of 3 outdoor units can be connected (with one transmitter, choose one-to-one order, and three transmitters to choose one-to-three to order). There are two high magnetic magnets on the back shell of the main unit, which can be adsorbed on metal objects.There is a stand on the back of the main unit, which can stand in a horizontal position. High sensitivity touch button control, easy to operate. Time, alarm clock, snooze function. Comfort level indication, temperature and humidity trend indication.HTN large-screen high-definition color LCD display without viewing angle. With backlight, the backlight will automatically turn off after 30 seconds of no operation.The outdoor unit can be hung using the hanging holes, or it can be placed on the desktop. The outdoor unit is XP4 waterproof (in order to keep the outdoor unit in good use, the outdoor unit should be placed vertically to avoid direct sunlight and direct rain for a long time).Material: ABScolour: WhitePackage Contents:1 x Host 1 x Transmitter 1 Set x installation accessoriesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.