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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
D1(ESP 12E) WiFi Development Board 2000W 220V AC Motor Speed Controller Voltage Regulator 5mm) Emitter Infrared LED (950nm 5mm) Emitter Infrared LED (950nm wavelength) Detector Phototransistor Sensitivity Adjustment Onboard potentiometer (10KOhm trimmer) Digital Output TTL level (HIGH LOW) with threshold adjustment Comparator IC LM393 Dual Comparator Indicator LEDs Power LED (Red) + Signal LED (Green) Current Consumption ~20mA at 5V PCB Dimensions ~32mm x 14mm Mounting M3 mounting hole Connector 4 pin header (VCC 1mm center positive DC jack weather stations Professional Applications: Suitable for industrial and commercial use
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