Adults only
Involves 230V mains and a high-power geyser.
Not for children. Build at your own risk.
A 10–13 A geyser is too much for a relay module, so the relay only switches the contactor coil. MCB, earth, a closed box and a licensed electrician are required.
Strictly follow the description given with this video.
What is in the kit
- Relay module, 1-channel, 5V× 1 · ₹57
- ESP32 development board (30-pin)× 1 · ₹518
- 25 A contactor, 230V coil× 1
- Push button× 1 · ₹3.45
- MCB + closed enclosure× 1