AC Dimmer Module 4A for Arduino ESP32 Compact TRIAC Dimmer 400V 4A 3 3V 5V Logic Phase Control

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• COMPACT LOW-POWER AC DIMMING – Control AC loads up to 4A at 400V with smooth phase-angle regulation. Perfect for dimmable incandescent lights, small fans, pumps, air purifiers, and low-power heating elements. True voltage control, not just on/off switching.
• ULTRA-COMPACT DESIGN – Tiny footprint (60 × 20 × 20 mm) fits easily into small enclosures and tight spaces. Ideal for DIY smart switches, lamp controllers, and space-constrained automation projects where larger modules won't fit.
• ARDUINO & ESP32 COMPATIBLE – Supports 3.3V, 5V, and 12V logic levels for universal microcontroller compatibility. Works with Arduino, ESP32, ESP8266, STM32, Raspberry Pi, and more. Ready-to-use rbdimmerESP32 library simplifies coding with example projects.
• SMART HOME INTEGRATION – Direct compatibility with ESPHome for Home Assistant, Tasmota firmware, and custom automation platforms. Build voice-controlled lighting, scheduled operations, and energy-saving routines through your preferred smart home ecosystem.
• SAFE OPTOCOUPLER ISOLATION – Complete electrical separation between high-voltage AC and low-voltage control circuit protects your microcontroller. Zero-cross detection output enables precise timing synchronization for flicker-free dimming.