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Small green circuit board with black relay module and white Grove connector, 40mm by 20mm

Seeed Studio

Seeed Studio Grove Solid State Relay V2

SKU CH-HRT1-S4TF6

Grove solid-state relay switches up to 240 VAC loads silently with no moving parts, ideal for stage lighting and explosion-proof environments

  • TypeSensors
  • Faster switching than mechanical relays with no contacts to wear
  • Silent operation ideal for noise-sensitive environments
  • No sparking allows use in explosive atmospheres
  • Compact monoblock design fits more channels in less space
  • Controls up to 240 VAC from a 5 V logic signal

Solid-State Relay for AC Switching

The Grove Solid State Relay V2 uses a G3MC202P module to switch AC loads up to 240 VAC with a 5 V control signal. It connects through the standard Grove interface for direct use with Arduino-compatible boards. The solid-state design removes moving parts, giving faster switching and silent operation compared with electromechanical relays. It is built for applications that need low-latency switching such as stage lighting or medical equipment.

Grove Interface and Monoblock Construction

The Grove connector lets you plug the module into a shield or base board without soldering or loose wires. Its monoblock construction integrates the PCB, terminals and heat sink into a compact 40 mm by 20 mm by 25 mm package that weighs 131 g. This thin profile allows more channels to be fitted in the same space than a mechanical relay would allow. No additional driver circuitry is required because the control side accepts 4 to 6 V directly.

240 VAC Load Capacity with Limitations

The relay handles AC loads from 75 to 264 VAC at 50 or 60 Hz, making it suitable for mains-powered devices. It cannot switch DC loads; once triggered with DC the output latches on permanently. Leakage current means it is not recommended for low-power appliances. The higher on-state resistance generates heat during continuous use, so thermal headroom must be considered for sustained switching.

Highlights

  • Faster switching than mechanical relays with no contacts to wear
  • Silent operation ideal for noise-sensitive environments
  • No sparking allows use in explosive atmospheres
  • Compact monoblock design fits more channels in less space
  • Controls up to 240 VAC from a 5 V logic signal

Specifications

TypeSensors

Questions about this item

Will the G3MC202P module inside this relay need replacement after many switching cycles?

No, the solid-state design has no moving contacts to wear out, so the module does not require replacement from switching fatigue.

What is the first limit reached when the relay runs continuously at its maximum 240 VAC load?

The 2 A rated load current is the limiting factor; sustained operation above that level is not supported.

How much heat and noise does the 40 mm × 20 mm × 25 mm unit produce during all-day operation?

It operates silently, but the higher on-state resistance generates noticeable heat, so adequate airflow around the 131 g module is recommended.

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