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%RH95%RH Outdoor temperature display range: -40+60 & -40+140 Outdoor humidity display range: 20%RH95%RH 2. Resolution: Temperature display resolution: 0.1 & 0.1 Humidity display resolution: 1%RH 3. Error: 040/32104: 1C/1.8F -200/4065/-432/104149: 2C/3.6F 40%RH80%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