LY-DXN series high-voltage display device converts high-voltage electrical signals into optical signals through pillar sensors, reflecting the electricity status of high-voltage equipment and playing an obvious warning role. The high-voltage display device developed by our company adopts low power consumption, chip mounted components and ultrasonic welding process, which is characterized by low power consumption, low heating, strong moisture-proof performance, high reliability and long service life. The product meets the standard requirements of DL/T538 Technical Conditions for High Voltage Live Display Devices, and can effectively prevent accidental entry into the electricity room and electrical misoperation. LY-DXN series high-voltage display device is applicable to indoor three-phase high-voltage electrical equipment with AC 50Hz and rated voltage of 7.2KV-40.5KV.