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TD16 12V Lead-acid Battery Capacity Indicator Touch Button Power Display Lead-acid Tester Detector

TD16 24V LED Battery Power Indicator Touch Button Power Display Lead-acid Tester Detector

XD-6098 12V 36W Electronic Semiconductor Refrigeration Chip Low Power Cold Plate Cooling Module Fast Cooling

DIY Keyboard Kit Music Box STC89C52 Microcontroller Beginner DIY Small Production Kits

XD-1037 DC12V 60W Semiconductor Refrigeration Chip Set Cooler Refrigeration Board Small Power Radiator System