6 touch buttons: [SET] [MODE] [ALERTS] [UP] [SNOOZE/LIGHT] [DOWN]-- Simple and convenient operation, fashionable touch design With backlight: DC power supply: 4 levels of dimming (high brightness - medium brightness - low brightness - off); Battery powered: Automatically turns off the display after 10 seconds of lighting (batteries not included) Time display: 12/24 hour time selection Snooze function (snooze time 5 to 60 minutes) Perpetual calendar, date display selection (switchable format): M (month)/D (day) and D (day)/M (month) Week display: Five languages available (German, English, French, Italian, Spanish) Temperature display unit: / (can be switched at will) Atmospheric pressure indication (monitored in the last 12 hours): hPa/mb and inHg, two unit options, range 850 hPa/mb (25.1 inHg) -- 1100 hPa/mb (32.48 inHg) 6-level weather forecast function: sunny, cloudy, overcast, rainy, heavy rain, snowy Moon phase indication (8 moon phases) Temperature and humidity memory function: display indoor/outdoor maximum/low temperature in memory, display indoor/outdoor maximum/low humidity Temperature detection range Indoor: -20+70-4158); OUTDOOR: -40+70-40158resolution 0.1/ Indoor and outdoor humidity detection range: 20%RH ~ 95% RH Comfort level, temperature change trend, maximum and minimum indoor and outdoor temperature and humidity memory function Indoor temperature upper and lower limit alarm function (high and low temperature) Outdoor temperature upper and lower limit alarm function (high and low temperature) Outdoor transmitter: IP54 dustproof and waterproof, can be hung or placed, easy to install Using a stable RF detection frequency of 433.92MHz, the wireless transmission distance can reach 150 meters/492 feet One indoor receiver can connect to three outdoor transmitters at the same time (the display can be switched manually/automatically). The default for regular delivery is 1 transmitter. If you need three, please contact customer service. Indoor and outdoor low power indication (low power detection function, 3 levels of power display 100%, 30%, 0%) USB charging function (one output port) Power supply mode: (battery not included) Receiver: 3 x "AAA" No. 7 batteries or DC 5V power supply Transmitter: 2 x "AA" batteries Product dimensions: Main unit: 180 x 25 x 140 mm; Transmitter: 50 x 25 x 110 mm; Screen size: 130 x 80 mm (6 inches). Note: The data are all measured manually, please allow 1-3 cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.