
Sonoff IP66 Waterproof Case for BASICR4 | IP66-CASE
The SONOFF IP66 Waterproof Case is a dust-proof and waterproof housing for SONOFF BASICR4 and Basic Gen5 smart switches. Fit the switch inside to use it safely in wet or dusty environments.
IP66 Water Protection: The housing is rated IP66, meaning it is protected against strong water jets, so rain and splashes do not reach the switch inside.

Dust-Proof, Flame-Rated Materials: The case also keeps dust out of the device. The body is ABS (V0) and the transparent cover is PC (V0), so you can see the switch inside.

Who it's for / Works with: SONOFF BASICR4 and Basic Gen5 users who need to install the switch outside or in a wet environment.
Good to know: The Basic Gen5 needs a 3D-printed base for a secure and complete fit inside the case (the BASICR4 does not). The case is an enclosure only — the smart switch is sold separately.
Technical Specifications
| Specification | IP66 Waterproof Case |
|---|---|
| Protection rating | IP66 (waterproof & dust-proof) |
| Model | Waterproof Box (IP66-CASE) |
| Body material | ABS V0 |
| Transparent cover material | PC V0 |
| Weight | 145 g |
| Compatible with | SONOFF BASICR4, Basic Gen5 (with 3D-printed base) |