Features: The meter is fully in conformity with the relevant technical requirements of GB/T17215.321-2008 national standard and the IEC62053 international standard for grade 1 or level 2 single-phase energy meters, enabling direct and accurate measurement of active energy consumption. LCD display with 5+1 digits shows total power consumption. Designed with high reliability, compact size, lightweight, sleek appearance, advanced technology, and 35mm DIN standard guide rail installation. Offers excellent anti-electromagnetic interference performance, low power consumption, high accuracy, high overload capacity, high stability, anti-tampering features, and long service life. Suitable for measuring active energy in single-phase AC circuits with a rated frequency of 50 Hz or 60 Hz. Intended for fixed indoor installation. Operates within a temperature range of -25C to 55C and relative humidity up to 95%, in environments free from corrosive gases, dust, mold, salt fog, condensation, and insects. Specification: Model: DDS518C Phase number: Single phase Type: Guide rail mount Display mode: LCD Rated voltage: 230V 50Hz Rated current: 5-32A Working temperature: -25C to 55C Accuracy level: Class 1 (measurement error < 1%) Equipped with S0 port: 2000Imp/kWh (pulse width = 80ms) Relative humidity: 95% Size: As shown in image Weight: Approx. 104g / 3.7oz Installation considerations: 1. Installation must be performed by a qualified electrician or professional. 2. The electric meter should be installed indoors in a well-ventilated and dry location, using 35mm DIN standard guide rail mounting. The meter's base must be securely fixed to a rigid, fire-resistant, non-vibrating wall. 3. The bottom plate of the electric energy meter shall be fixed to a rigid, fire-resistant, non-vibrating wall. 4. Electricity meters should be installed in protective enclosures in areas with dust, dirt, or potential physical damage. 5. Wiring must follow the provided diagram. Use multi-strand copper wire to ensure proper contact and prevent abnormal operation or overheating. 6. When correctly connected to the power supply, the power indicator light will turn on. 7. In areas prone to lightning, appropriate lightning protection measures should be implemented to prevent damage to the meter. Load capacity: 0.05Ib to Imax (direct connection) Power indication: Green light ON indicates normal power supply Pulse indication: Red light ON indicates active power pulse detection Pulse duration: Approximately 80ms when a sampling signal is present Package list: 1 x Din-rail energy meter