Features Advanced Voltage Monitoring: Accurately measures working voltage with true RMS technology, ensuring reliable performance for your electrical systems Customizable Operating Modes: Easily select your desired operating mode using the intuitive rotary knob for enhanced user convenience Exceptional Measurement Precision: Experience high accuracy with a voltage measurement precision of ≦ 1%, safeguarding your equipment from fluctuations Clear Status Indication: The built-in LED indicator provides a simple and convenient way to monitor the relay's working status at a glance Space-Saving Design: With a compact width of only 18mm, this relay easily mounts on a 35mm rail, for any electrical panel setup Features: 1、Monitor the working voltage (true RMS measurement). 2、The operating mode can be selected via the rotary knob. 3、High accuracy, voltage measurement accuracy is ≦ 1%. 4、The working status of the relay is indicated by the LED indicator, which is simple and convenient. 5、Compact size, only 18mm width, 35mm rail mounting. Specification: Features: 1. Monitor the working voltage (true RMS measurement). 2. The operating mode can be selected via the rotary knob. 3. High accuracy, voltage measurement accuracy is ≤ 1%. 4. The working status of the relay is indicated by the LED indicator, which is simple and convenient. 5. Compact size, only 18mm width, 35mm rail mounting. 6. Apply to Overvoltage protection for electrical equipment or compressors, emergency/backup power switching control. Specification: Function GB14048.5, IEC/EN 60225-1 Package list: 1 * Relay 1 * User manual Package List