Low power 4G remote transmission instrument is a battery powered instrument that can collect data such as pressure, temperature, and liquid level, and can be transmitted remotely through 4G. Suitable for application scenarios of remote data collection without mains power supply. The built-in 38000MAH high-capacity sub battery can support continuous use for no less than 3 years. Support base station positioning, mobile phone monitoring, historical data and curve recording, as well as push of data limit alarm records and alarm messages