1. 6 touch keys: [Set] [Mode] [Alerts] [up] [snooze/light] [down] - easy and convenient to use, Elegant touch design2. With backlight: DC power supply: 4-level dimming (high light - medium light - low light - off); Battery powered: Automatic listening screen after 10 seconds of lighting3. Time display: 12hr / 24hr time selection4. Gluttonous function alarm clock (gluttonous sleep time 5~60 minutes)5. Perpetual calendar, date display choice (switchable format): M (month) / D (day) & D (day) / M (month)6. Week display: five weeks optional language (German English French Italian Spanish)7. Temperature display unit: / (can be switched at will)8. Atmospheric pressure indication (monitoring the last 12 hours): HPA/MB and inhg two unit choices, range850 HPA/MB (25.1 inhg) - 1,100 HPA/MB (32.48 inhg)9. Level 6 weather forecast function: sunny, cloudy, cloudy, rain, heavy rain, snow10. Moon phase indication (8 types of moon phases)11. Temperature and humidity memory function: memorize the highest/lowest indoor/outdoor temperature display, the highest/lowest indoor/outdoor humidity display12. Temperature detection rangeIndoor: -20~+70(-4~158);Outdoor: -40~+70(-40~158) Division rate 0.1/13. Indoor and outdoor humidity detection range: 20%RH~95%RH14. Comfort, temperature change trend, indoor and outdoor temperature humidity max min memory function15. Indoor temperature (high and low temperature) upper and lower alarm function16. Outdoor temperature (high and low temperature) upper and lower alarm function17. Outdoor transmitter: ip54 dustproof and waterproof, can be hung, can stand, easy to installAdopts stable 433.92MHz RF detection frequency, the wireless transmission distance can reach 150 meters/492 feet18. One indoor receiver can connect 3 outdoor transmitters at the same time (the screen can switch display manually / automatically) regular delivery default is 1 transmitter, must be accompanied by three please contact customer service19. Low power indication inside and outside (low power detection function, level 3 power display 100%, 30%, 0%)20. USB charging function (one output port)21. Power supply mode:Receiver: 3 x AAA No. 7 batteries or DC 5V power supplyTransmitter: 2x "AA" No. 5 batteries