1. Radio transmission circuit and coding technology to solve the problem of signal interference blocking 2. A variety of temperature modes can be adjusted, suitable for different scenarios 3. Wireless transmission of data signals, mobile phone remote monitoring 4. Ultra-low power consumption, long battery life 5. With low voltage monitoring prompt function 6. Regularly send online reports to the host 7. Anti-dismantle design in the field of professional security 8. Split design, high reliability 9. Communication method: WIFI 2.4G 10. Operating temperature: -10 to 55 degrees Celsius 11. Voltage: DC 4.5V 12. Current: About 3A 13. Power: About 13.5W 14. Power supply mode: 3 AA batteries (not included in the product) 15. Size: About 60 x 64 x 28mm 16. Weight: About 90g