Multi-device wireless control system using a Seeed Studio XIAO ESP32-C3, 433 MHz ASK receiver, 5 V relay drivers, AMS1117-3.3 regulator, input protection, and PCB isolation between low-voltage control and relay output sections.

4-Channel Secure 433 MHz Automotive Relay Receiver with STM32G071 and RFM69HCW, featuring a 16-pin Digi-Key right-angle ≥10 A/circuit connector, 2 oz copper 10 A traces, AEC-Q200 Digi-Key control passives, and verified LED/pushbutton wiring #automotive #433MHz #STM32G0 #RFM69 #relays #10A #2ozCopper #AECQ200

Dual-Board 433 MHz Rolling-Code ATX Power Controller with Integrated 24-Hour Camera Timer and Debounced 2-Pin PANEL_SW Manual Override on U5 Latch Input (Preserves Camera Dial Microswitch Gating)