1、Has excellent long‑term reliability, small size, light weight, perfect appearance, easy installation. 2、Can directly and accurately measure the active power consumption of the load in a single‑phase AC network with a rated frequency of 50 Hz. 3、Uses microelectronics technology, and introduces large‑scale integrated circuits, and uses advanced digital technology and SMT technology, etc. 4、35mm standard DIN rail installation, in line with standard DIN EN50022, extension terminal cover to protect the safety of use. 5、Direct connection operation, two types of wiring can be selected. The standard configuration is S‑type wiring, U‑type wiring is optional. 1 x Rail Energy Meter1 x User Manual Condition: 100% Brand NewItem Type: Rail Energy MeterVoltage: 230VCurrent: 5 (80) APulse Constant: 1600imp/KwhFrequency: 50HzSize: As Shown in the PicturesProduct Description:DDS1891 single-phase electronic DIN rail active energy meter is a new type of single-phase two-wire active energy meter. It adopts microelectronics technology, introduces large-scale integrated circuits, and uses advanced digital technology and SMT technology. Its completely independent intellectual property rights and minimum size.It can accurately and directly measure the 50Hz active power consumption from the single-phase AC grid, and can display the total power consumption through the stepper motor type pulse register.It has the characteristics of good reliability, small size, light weight, beautiful appearance and convenient installation.Functions and Features:●35mm standard DIN rail installation, in line with standard DIN EN 50022.●Four widths (modulus 12.5mm), in line with standard DIN 43880.●Standard configuration 5 + 1 ( 99999.1kWh) digital display.●Standard configuration of passive pulse output (polarity), long-distance passive pulse output (no polarity) can be selected. And easily contact with various AMR systems, in line with standards IEC 62053-21 and DIN 43864.●Two LEDs indicate power status (green) and energy pulse signal (red).●One-way measurement of single-phase two-wire active energy consumption. The direction of the load current is irrelevant and conforms to the standard IEC62053- 21.●Direct connection operation, two types of wiring can be selected. The standard configuration is S-type wiring, U-type wiring is optional.●Extend the terminal cover to protect the safety of use.