The single-phase guideway electronic energy meter is designed with advanced energy metering chip and mature software technology, and is used to measure single-phase AC active energy with a frequency of 50Hz/60Hz. Each performance index of this product meets the relevant technical requirements of GB/T17215.321-2008 Class 1 and Class 2 Static AC Active Energy Meters; The 8-bit LCD display shows the functional power consumption. It has the characteristics of good reliability, small size, light weight, beautiful appearance, advanced technology, 35mm DIN standard rail installation, etc.; it also has good electromagnetic interference resistance, low self consumption and power saving, high precision, high overload, high stability, power theft prevention, and long life. It is used for fixed installation indoors, and is applicable to the environment temperature not exceeding - 25~+55 ℃, the relative humidity not exceeding 95%, and the air does not contain corrosive gas and avoid the impact of dust, mold, salt fog, condensation, insects, etc.