Compared with the ordinary relay, the high-voltage reed relay has the following differences: The working principle is different: the ordinary relay works on the electromagnetic principle, and the magnetic field generated by the electromagnet makes the mechanical contact open and close, so as to realize the opening and closing of the circuit; while the high-voltage dry reed relay uses the magnetic material of the reed to open and close the reed through the magnetic field, so as to realize the opening and closing of the circuit. Different application scenarios: ordinary relays are usually used for low-voltage and small-current circuit control and protection, such as electronic circuits, household appliances, etc., while high-voltage reed relays are mainly used in high-voltage and large-current power systems, such as high-voltage switches, transformer protection, etc. Different electrical performance: because the high-voltage reed relay uses dry-type switch technology, it has good insulation performance and arc resistance, so it is more reliable in the high-voltage power system; while the ordinary relay usually uses mechanical contacts, which is easy to produce arc and contact problems, affecting reliability. Different service life: since the high-voltage reed relay has no mechanical contact, its service life is longer; while the mechanical contact of the ordinary relay is easy to wear and tear, and its service life is shorter. Different noise: there is no noise in the switching process because there is no collision of mechanical contacts in the high-voltage reed relay, while there is noise due to the collision of mechanical contacts in the switching process of the ordinary relay.