MPM100/MPM200, DEM100/DEM130，are all smart power meters, which can be used in the industrial, commercial, utility, transportation, data center, for monitoring electrical power data, such as voltage, current, active power, reactive power, energy, demand, etc. and switch or circuit-breaker ON/OFF status.

As the market prospect of new energy vehicles continues to improve, the public charging market has great potential. Although the charging infrastructure is increasingly complete, compared with the current number of new energy vehicles, there is still a lot of room for improvement. In the face of the large increase in the demand for charging piles, further vigorously promoting the construction of charging infrastructure is an urgent task to accelerate the promotion and application of electric vehicles at present, and an important strategic measure to promote the revolution of energy consumption.

Electric transmission line always expose on the wild, and easily suffer from thunder-and-lighting, rainstorm,  typhoon and snow. Tower footing slide, collapse, tower pole leaning, fracturing and other accidents happened frequently, seriously threaten the stable operation of power supply system and the safety of People's property.

The on-line monitoring system of wire temperature measurement of Four-faith transmission line is composed of temperature probe, host, solar panel, Web platform and WeChat/SMS. The temperature probe is installed on the wire monitoring point, when the line is powered by CT power, when the line is not powered by dry battery power, the host is installed on the tower, built-in high-performance lithium battery, lithium battery charged by solar energy.