1.This energy meter is with RS485 coummunication.6+1 digits LCD display shows the power consumption. 2. It features high reliability, small volume, light weight, beautiful appearance, advanced technology. 3. Standard 35mm din Rail installation, easy and convenient.It has good anti-electromagnetic interference, low power consumption, high precision, high overload, high stability, anti electricity-stolen and . 4.This table is suitable for the measurement of rated frequency 50 Hz single-phase ac active electricity, used for fixed installation indoors. 5.The meter is fully in conformity with the relevant technical requirements of GB/T17215.321-2008 national standard and the IEC62053 standard of grade 1 or level 2 single-phase energy meter, which can directly and accurately measure active energy of the energy consumption. Material: ABS colour: white Package Contents: 1 x Electrical meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.