Several advantages of solid state relays

(1) Long life and high reliability: Solid-state relays have no mechanical parts, and solid-state devices complete the contact function. Since there are no moving parts, they can work in high-impact and vibration environments. Due to the components that make up solid-state relays The inherent characteristics determine the long life and high reliability of solid state relays.
(2) High sensitivity, low control power, and good electromagnetic compatibility: Solid-state relays have a wide input voltage range and low driving power, and are compatible with most logic integrated circuits without the need for buffers or drivers.
(3) Fast switching: Because solid-state relays use solid devices, the switching speed can range from a few milliseconds to a few microseconds.
(4) Small electromagnetic interference: Solid-state relays have no input "coil" and no trigger arcing or rebound, thus reducing electromagnetic interference. Most AC output solid-state relays are a zero-voltage switch that conducts at zero voltage and turns off at zero current, reducing sudden interruptions in the current waveform and thereby reducing switching transient effects.