SONOFF RFR2 Wi-Fi Smart Switch with 433MHz RF Receiver
₱415as of Aug 12, 2026
COD · Shopee-protected payment
SONOFF RFR2 review: best retrofit module
How we reviewed this: we read the Shopee PH listing, checked the listed specs, and went through 66 owner ratings.
SONOFF RFR2 Wi-Fi Smart Switch with 433MHz RF ReceiverA 10A module that hides at the fixture and makes an existing dumb switch smart, with a 433MHz receiver, a flame-resistant housing and a local REST API for Home Assistant.
- Price: ₱415 as of Aug 12, 2026
- Biggest pro: Wires inline at the fixture or the box, so you keep the light switch you already have
- Main catch: A module, not a wall plate, so it needs space inside a junction box or fixture housing
At a glance
| Brand | SONOFF |
|---|---|
| Type | Smart switch module |
| Price | ₱415 (as of Aug 12, 2026) |
| Shopee owner rating | 4.9 ★ from 66 Shopee ratings |
| Shop | SONOFF.ph |
| Units sold | 266 |
Specifications
Specs per the published SONOFF RFR2 documentation
| Type | Smart switch module |
|---|---|
| Connectivity | Wi-Fi 2.4GHz plus a 433.92MHz RF receiver, eWeLink app |
| Hub | Not needed |
| Maximum load | 10A, 2200W |
| Housing | LEXAN 940A flame-resistant PC, UL-94 V0 |
| Open firmware | DIY mode with a local REST API |
| Warranty | Not specified |
Pros and cons
✓ Pros
- Wires inline at the fixture or the box, so you keep the light switch you already have
- Handles 10A and 2200W, enough for a lighting circuit or a single big appliance
- A built-in 433.92MHz receiver pairs with cheap RF remotes as well as the app
- DIY mode exposes a local REST API, so it runs on Home Assistant without the cloud
✗ Cons
- A module, not a wall plate, so it needs space inside a junction box or fixture housing
- Wiring it means working at the fixture, which is more work than swapping a face plate
- No wall panel of its own, so guests still use the dumb switch on the wall
- The listing does not state a warranty period
The SONOFF RFR2 is our Best Retrofit Module: it hides at the fixture, keeps your existing wall switch working, and adds app, voice and RF control on top. Around ₱415 as of August 12, 2026.
Why choose a module over a wall panel?
Because the wall panel is the part that causes arguments.
Swap a plate and everyone in the house has to relearn a switch, the plate has to fit the box, and the wiring has to suit. A module sidesteps all three. The wall switch stays exactly as it is, and the smart part lives out of sight.
It also solves the case a panel cannot: a light with no wall switch at all, or one wired somewhere awkward.
What can it handle?
10A and 2200W, published by SONOFF. That is a whole lighting circuit with room to spare, or one substantial appliance.
The housing is LEXAN 940A flame-resistant PC, rated UL-94 V0. That is a stated material spec rather than a vague “fireproof” claim, which is more than most listings in this category manage.
Will it work when the internet is down?
Better than almost anything else here, for two reasons.
There is a 433.92MHz receiver built in, so a paired RF remote works with no network at all. And DIY mode exposes a local REST API, which means Home Assistant can drive it entirely on your own network. If you are building a house that does not stop working when PLDT does, this is the switch to start with.
What is the catch?
The install. You are working at the fixture or inside a junction box, not swapping a face plate, so you need free space in there and a bit more confidence with wiring. If neither appeals, buy a panel.
Is the SONOFF RFR2 sulit?
Around ₱415 as of August 12, 2026. Check the latest price on Shopee.
Middle of the pack on price, top of the pack on what it does with it: a published load rating, a named housing material, a local API, and a brand with real firmware support. For a part that sits inside your ceiling for a decade, that is where the money should go.
Who the SONOFF RFR2 suits
Buy this if you want the lights to get smarter without anyone noticing the switches changed, or if you are running Home Assistant and want local control. It is the right choice for retrofits, rentals where you cannot change plates, and lights with no convenient wall switch.
See how it ranks in our best smart light switches in the Philippines roundup, or compare modules against wall panels in our smart light switch buying guide.
If the SONOFF RFR2 is not right
Need to switch more than a lighting circuit? The SMATRUL 16A Wi-Fi RF433 mini module is rated to 16A and ships with a 10-key remote. Want a wall panel from the same brand instead? The SONOFF T5 120TX Ultimate is the nicest panel here to use, as long as your box has a neutral wire.
Compare SONOFF RFR2 Wi-Fi Smart Switch with 433MHz RF Receiver
See how it compares with the other top picks in our smart light switches comparison.
Frequently Asked Questions
Do I still use my normal wall switch?
Yes, and that is the point. The RFR2 wires in behind the scenes, so the switch on your wall keeps working exactly as it did. You add app control, voice control and schedules on top. Nobody in the house has to learn anything new.
Where does it physically go?
Inside a junction box or in the fixture housing, wherever there is room. That is the real constraint: it is a small module but it is not flat, so a cramped box will not take it. Check for space before you order.
What can it actually switch?
SONOFF publishes 10A and 2200W. That covers a lighting circuit comfortably and a single big appliance too. The housing is LEXAN 940A flame-resistant PC rated UL-94 V0, which is a real published safety spec rather than a marketing word.
Can it run without the internet?
More than most. It has a 433.92MHz receiver built in, so paired RF remotes work locally. And its DIY mode exposes a local REST API, so Home Assistant can drive it entirely on your own network with no cloud account at all.
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SONOFF RFR2₱415 when last checked
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