I used a standard 240 volt coil relay and an emylo 240 volt smart switch to build an Alexa controlled switch to voice control my water heater. The box was a little cramped but I was able to fit everything into it including putting a green pilot light on the cover to signal when the water heater is on.
Inkbirdplus Dustproof Waterproof Electrical Enclosure
9 Review
Zulkit Junction Box ABS Plastic Waterproof IP65 Electrical Boxes Hinged Shell Outdoor Universal Project Enclosure With Mounting Plate And Wall Brackets Grey 11.8X7.9X6.3 Inch(300X200X160Mm)
10 Review
Zulkit Waterproof Plastic Project Box ABS IP65 Electrical Junction Box Enclosure Black 6.22 X 3.54 X 2.36 Inch (158 X 90 X 60Mm)
12 Review
ATPWONZ Junction Waterproof Electrical 5Mm 10Mm
9 Review
💡 Electronic FL Ballast ICN-4P32-N (Formerly ICN-4P32-SC) for 3-4 F32T8 F40T8 F17T8 Lamps, 120V/277V Compatibility
5 Review
💡 High-Quality Advance ICN-4P32-SC Electronic Fluorescent Ballast: Ideal for 4 Lamps, 32W T8, 120/277V
3 Review
💡 Enhance Lighting Efficiency with Sunpark SL26T Electronic Circline Ballast (2)
3 Review
💡 Fulham Lighting WH7-120-L Workhorse 7 Versatile Fluorescent Lamp Ballast - 20 Count Silver
3 Review