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Small green circuit board with relay and antenna, 53.8 by 31.2 mm

Ruth's sister

Ruth's sister B2RD4N60204 internal power cable

SKU CH-X3CX-S3D0Y

A 433 MHz single-channel RF relay module that switches AC 85 V to 250 V loads and stores up to 16 learning-code remotes

  • Controls 220 V loads wirelessly up to 100 m
  • 433 MHz RF link penetrates walls without wiring
  • Learns up to 16 remotes using 1527 code
  • Three output modes suit momentary toggle or latching needs
  • Compact 53.8 × 31.2 mm module fits tight enclosures

Wireless Relay Module

The Ruth's sister B2RD4N60204 is a single-channel RF receiver that switches mains loads up to 250 V AC. It targets installers and hobbyists who need a compact, learning-code relay for lighting, garage doors or automation projects without wiring a dedicated controller.

Installation Notes

The board measures 53.8 by 31.2 mm and fits inside a standard junction box or project enclosure. Power the module from any AC source between 85 V and 250 V, then pair up to sixteen 1527-code remotes by pressing the learning button; no app or programming cable is required. The only common pitfall is exceeding the 100 m open-space range or mounting the antenna near metal, which cuts effective distance sharply.

Who Should Buy

Suits anyone adding momentary, toggle or latching control to an existing 110 V or 220 V circuit without running new switch wiring. Not suited for buyers who need multi-channel switching, encrypted communication, smart-home integration or a relay rated for inductive loads beyond the listed resistive specification.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 60% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the module is working after wiring it to the AC supply?

Press the remote button; the relay should click and the connected load toggles on or off, confirming the 433 MHz link and the NO/NC/COM output terminals are active.

What is included in the package and what must I source separately?

The box contains one KR2201-4 receiver module with its shell only; a compatible 1527-code learning remote, AC wiring and any mounting hardware are not included.

Which version should I choose for a 220 V installation with a single circuit?

Select the 1-channel model that accepts AC 85 V – 250 V and operates at 433 MHz, as it covers 220 V supplies and provides one relay output for a single load.

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