SONOFF IP66 Waterproof Case


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Water-Proof】IP66 waterproof rating means the housing has a robust waterproof capability. Ensure your devices use in a wet environment safely.
Dust-Proof】Prevent your devices from dust entering.

Note: We have released the upgrade version of the waterproof box – R2, with a larger size compatible with TH Origin/Elite, POW Origin/Elite, NSPanel, TX series, etc 30+ SONOFF devices, please check the difference here. Learn more about waterproof box R2.

Frequently Bought Together
SONOFF ZBMINI Extreme Zigbee Smart Switch ZBMINIL2 (No Neutral Required)
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Customer Service Guarantee

SONOFF IP66 is a high quality waterproof case that can be used with SONOFF BASICR2,RFR2 in the underwater environment. The waterproof level of the waterproof box is IP66. It allows you to remote control your lights or home appliances outdoor. Just get it to control your Christmas tree lightings!

Specification for IP66 Waterproof Case

  • Waterproof Level: IP66
  • Body Material: ABS V0
  • Transparent Cover Material: PC V0
  • Dimensions: 132.2*68.7*50.1mm(L*W*H)(Details)
  • Weight: 145.0g

Additional information

Weight 111 g
Dimensions 135 × 72 × 52 mm
Waterproof Level


Body Material


Transparent Cover Material


Customer Reviews

Based on 9 reviews
Reg Murray
Would have been 5 except for this.

Cable glands would not go through holes. I opened them up slightly to enable entry. They were installed correctly as per instructions!

Thanks for your feedback, we will try to improve our devices in the future. And you can also try to buy our waterproof R2:

The included nuts do NOT FIT in the holes 🙁

I ordered four of these IP66 cases. The included nuts do not fit through the two holes of the case. I've watched videos and pictures online of how this is supposed to be assembled - but if I try to do it like this I will definitely break something. I feel silly.
Am I doing something wrong? If so, what??

For the IP66, you need to tighten the screws from the inside to the outside, please try again

Albert Zangroniz

Good product great price.

A+ Good quality and a very good price.

Good quality and a very good price.

B. Siiger
Excellent box !

Of cause it fits my R3 Minis !
However: Rather long delivery time


Claus Kühnel
Perfect case...

... as expected.

Robert Dye
Great case but....

The case appears to be great and with a few other projects underneath my belt I don't have any doubts about it being waterproof. The only gripe I have is that it popped up as a recommended case for my Sonoff R3 switch. There is no way to get this switch and wiring inside the case. I gave it four stars being petty because I should have checked the dimensions but Itead also got to get taxed 1 star for the recommendation.

Rand Beveridge
Awesome value

The case was perfect for mounting my project outdoor. I’ve purchased 4 of these thus far and will be getting more as I need them.

Nancy Chen
Good waterproof case.

That's a stunning case, very robust and can be deployed on several different environments, specially in very raining ones. I have see no damage to my sonoff switch so far.You just have to work around the power supplier connection, but you do can deploy and use it!

SONOFF IP66 Waterproof Case