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$4.50In stock
The simplest bridge from logic to mains. One opto-isolated 10 A channel lets a microcontroller switch a single load safely. Perfect for a one-job node.
- 1 × 10 A relay, opto-isolated
- 3.3 V / 5 V logic
- Screw terminals, status LED
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Works with

Microelectronics
Raspberry Pi Pico 2
Dual-core RP2350 microcontroller — cheap, deterministic control for a single subsystem.
$5.00

Power
5V Power Supplies
Stable 5 V for Pis, ESP32 nodes, and logic — no brownouts under load.
$12.00

Grow Automation
Solenoid Valves
Normally-closed 12 V valves that fail safe — the actuator behind auto-watering.
$14.00