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1CH 5v Optocoupler Relay Board electronics 5W mini speaker included Tuning 5W mini speaker included Tuning Method Variable capacitor (manual analog tuning) Antenna Telescopic whip antenna or wire antenna included Power Supply 3V 5V DC (2x AA batteries or USB power) Current Consumption ~20 50 mA (typical during playback) PCB Type Single layer printed circuit board with labeled silk screen PCB Dimensions Approximately 70mm x 50mm Assembly Type Through hole soldering (beginner friendly) Skill Level Beginner to Intermediate Component Count 25 35 components (resistors FPV Racing Competitions: Purpose built for drone racing leagues and MultiGP sanctioned events where the 220mm wheelbase provides optimal balance of speed ) Mounting Screw holes for secure panel chassis mounting Connector Input 3 pin header (VCC Optocoupler isolation adds a critical safety layer absent in basic relay modules
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