Features: There are 2 types, one with backlight and one without; choose based on your needs. DIN-Rail Electric Meter is designed to divide electrical equipment into separate electrical installations and monitor energy consumption in individual areas. This KWh meter is suitable for measuring single-phase AC active energy with a rated frequency of 50Hz or 60Hz, intended for fixed indoor installation. High reliability, compact size, lightweight, sleek appearance, advanced technology, and compatible with 35mm DIN standard rail installation. The electronic KWh meter offers strong anti-electromagnetic interference performance, low power consumption, high accuracy, high overload capacity, high stability, tamper-resistant design, and long service life. Specifications: Material: Plastic Accuracy: First Grade Reference Voltage: 220V/230V 50/60Hz Reference Current (Max. Current): 5(80)A Insulating Property: 1min 4KV alternating voltage, 1.2/50us 6KV waveform impulse voltage Display: LCD with Backlight / LCD Display Installation: 35mm DIN Rail Wiring Method: Up-out and down-in / up-in and down-out Power: 17000W Environment Temperature: -20°C to +50°C Pole Width: 17.5mm / 0.7in Functions: Displays electricity, voltage, current, frequency, and power factor Note: Please allow 1-3cm error due to manual measurement. Ensure you are comfortable with this before purchasing. Due to differences in monitor displays, the image may not reflect the actual color of the item. Package includes: 1 x Single Phase Energy Meter