1. Measure the temperature and humidity, and an alarm will be issued if there is an abnormality 2. Using flame retardant engineering shell material, smoke and oil proof 3. Operating temperature: 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) 4. Speaker sound intensity: 85-105dB 5. Protocol: IEEE 802.11b/g/n 6. Power supply mode: USB charging / 2 CR123A (not included) 7. Voltage: 5V 8. Power: 5W 9. Current: 1A 10. Size: About 6.8 x 6.8 x 3cm 11. Weight: About 72g
