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Green circuit board with relay module and pin headers

Traditions (Generic)

Traditions (Generic) 8266 Relay Shield D1 Mini Module computer power cord

SKU CH-FC4R-GPXEX

A single-channel relay shield adds switched power control to an 8266 D1 Mini development board

  • One-channel relay shield controls high-power loads from a D1 Mini
  • 8266 development board integration simplifies IoT project wiring
  • Relay module design isolates microcontroller from switched circuits
  • Compact shield format plugs directly onto D1 Mini headers

Relay Shield for D1 Mini

This relay shield adds a single switched output to a D1 Mini development board based on the 8266 platform. It is intended for makers and engineers who need to control one mains or low-voltage circuit from a compact Wi-Fi enabled module.

One Channel Capacity

The board provides one relay channel, so it comfortably handles a single load such as a lamp, fan or small appliance. Projects that require switching multiple independent circuits will need additional shields or a multi-channel alternative.

How it compares

Measured against everything we stock in PC Power Cables, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 80% of the 1,029 comparable items (median $15.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the 8266 relay shield draw too much current from an older USB power supply I plan to reuse?

The module is designed for the D1 Mini form factor and typically draws only the coil current of a single relay channel, which is well within the capability of most standard 5 V USB supplies.

How can I confirm the 8266 relay shield is switching correctly after I wire it up?

Apply a logic signal to the control pin and listen for the audible click of the relay contacts; a multimeter across the output terminals will show continuity change in time with the signal.

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