AC Dimmer Module 4A for Arduino ESP32 – Compact TRIAC Dimmer 400V 4A, 3.3V/5V Logic, Phase Control for Lights Fans Small Appliances – DIY Smart Home Automation Module

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About This 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 pur ifiers, 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. Overview Operation Mode : ON-ON-ON Current Rating : 4 Amps Operating Voltage : 120 Volts Contact Type : Normally Closed Connector Type : Clamp Brand : Generic Switch Type : TRIAC Terminal : Screw Material : PCB Item dimensions L x W x H : 1.97 x 0.63 x 0.39 inches Show more