Seeed Studio Grove - 2-Channel Solid State Relay Relay for G3MC202P

Solid-state relays have much faster switching speeds compared with electromechanical relays, and have no physical contacts to wear out

Totally silent operation

No physical contacts means no sparking, allows it to be used in explosive environments, where it is critical that no spark is generated during switching

Increased lifetime, even if it is activated many times, as there are no moving parts to wear and no contacts to pit or build up carbon

Compact, thin-profile SSR of monoblock construction with an all-in-one lead frame incorporates a PCB, terminals and heat sink, which is much smaller than mechanical relays, and can integrate more channel

Disadvantages:

When closed, higher resistance (generating heat), and increased electrical noise

When open, lower resistance, and reverse leakage current

Only works for AC load

Typical Applications

Operations that require low-latency switching, e.g. stage light control

Devices that require high stability, e.g. medical devices, traffic signals

Situations that require explosion-proof, anticorrosion, moisture-proof, e.g. coal, chemical industries