Small size, light weight and beautiful appearanceGood reliability and easy installation35mm standard DIN rail mounting, in accordance with standard DIN EN50022.Single pole width (modulus 18mm) in accordance with DIN43880.The standard configuration 5+1 backlight LCD display (99999.1KWh)Features:1. RS485 (communication protocol Modbus-RTU) remote meter reading function.2. Display and reading: electricity, current, voltage, frequency, power factor3. Standard configuration pulse output passive (polarity), select remote pulse output passive (non-). It is easy to contact with and conforms to the standards IEC 62053-31 and DIN43864.4. Double color LED indicates the power status (green) and the energy pulse signal (red).5. Automatically detect the flow direction and of the load current6. One-way measurement of single-phase two-wire active power.7. Direct S type connection8. Extend the terminal cover to protect the use.Specification:Condition: Model: DDM18SDVoltage Specification: 220VFrequency: 50HzCurrent Specifications: 5(100)ACommunication : RS485Screen Display: Multi-function DisplayAccuracy Level: 1.0Working Temperature: -10 Celsius- +50 CelsiusInstallation : DIN Rail MountingCommunication protocol: MODBUS-RTU, DL/T645-1997, DL/T645-2007 (optional)Weight: . 102g / 3.6ozColour:whiteMaterial:plasticPackage Contents:1 * DDM18SD Energy Meter2 * Shell Accessories1 * manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.