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HD-0688 Single-Slot 18650 Li-ion Smart Battery Charger | Pro Tronix
Compact HD-0688 single-slot smart battery charger for 3.7V Li-ion batteries. Features integrated AC wall prongs, a spring-loaded slot, and built-in auto-stop overcharge protectio
4 Channel 12v Relay Module
2 Channel 5V Relay Module
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Buy the 2 Channel 5V relay shield module online. High-efficiency dual 10A optocoupler isolated switching board with selectable triggers for Arduino.
1 Channel 5V Relay Module
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Buy the 1 Channel 5V relay shield module online. High-performance 10A isolated switching board with high/low level trigger options for Arduino.
Piezo Sensor Element 20mm | Pro Tronix
High-sensitivity 20mm piezoelectric ceramic sensor element built on a robust brass substrate. Generates clear analog voltage spikes upon mechanical shock or vibration, offering an exceptional baseline transducer for electronic drum pads, acoustic pickups, and automated knock detectors.