Backlit Screen Button Wireless Indoor And Outdoor Temperature And Humidity Meter Digital Display Electronic Gas Wall Clock: Features: Indoor and outdoor temperature and humidity measurement Window opening reminder or Celsius convertible Large color screen display, comfort display Temperature trend display, maximum and minimum temperature and humidity records Product Description: 1.Measurement range: Indoor temperature display range: -9.9℃～+50℃ & 14℉～+122℉ Indoor humidity display range: 20%RH～95%RH Outdoor temperature display range: -40℃～+60℃ & -40℉～+140℉ Outdoor humidity display range: 20%RH～95%RH 2. Resolution: Temperature display resolution: 0.1℃ & 0.1℉ Humidity display resolution: 1%RH 3. Error: 0℃～40℃/32℉～104℉: ±1°C/1.8°F -20～0℃/40℃～65℃/-4℉～32℉/104℉～149℉: ±2°C/3.6°F 40%RH～80%RH: ±5%RH 4. Host product size: 152*95.5*22MM, transmitter size: 50*105*26MM 5. Single product packaging size: 152*35*155MM 10. Power supply method: Host 3*AAA three AA batteries transmitter (not included) 2*AAA two AA batteries (not included) 11. Packing list: Host*1+Transmitter*1+Instruction*1 Designed with of Use in Mind, this Alarm Clock is Very Easy to Operate.Perfect for Adults, Young People, Teens, and Seniors. Easy to Read Clock Numbers - the Numbers on the Clock are So Clear and Bright that They Can be Seen From the Other End of the Bedroom Even in the Middle of the Night, Even without Glasses! Alarm Clock Battery Backup: Even in the Event of a Power Failure, the Alarm Clock Will Continue to Work to Keep You Cozy and Asleep.The Clock Will Come Back on When Power is Restored. The Size is Relatively Small, Does not Need Much Space， And the Surface is Three-Dimensional and Beautiful, Very Convenient and Practical to Use. We Attach Great Importance to Product Quality and Customer Experience,If You Have Any Questions About the Product, Please Contact Us Customer Service,We Will Provide You with Satisfactory