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3-way PWM pulse adjustable frequency module square wave rectangular wave signal generator/duty cycle separately adjustable

Power outage automatic switching backup battery lithium battery module 5V-48V universal emergency converter YX850

XH-M350 battery switching module backup high-power power outage automatic switching battery power supply 12V150W

ZB2L3 Battery Capacity Tester External Load Discharge 1.2-12V Battery 18650 Capacity Test

Trigger cycle timing delay switch circuit with dual MOSFET control board replacing relay module 12 24V

XH-M603 Battery Lithium Battery Control Module Battery Charging Control Protection Switch 12-24V

XH-M229 desktop computer chassis power supply ATX adapter board power take-off board module power output terminal

XH-M229 desktop computer chassis power supply ATX adapter board power take-off board module power output terminal

XH-M229 desktop computer chassis power supply ATX adapter board power take-off board module power output terminal

DC-DC high-power adjustable boost module 3.0-35V up 3.5-35V 100W with digital display voltmeter

Constant current, constant voltage, high current 5A lithium-ion battery charging LED driver step-down constant current power supply module...

Green board PAM8403 power amplifier board Class D 2x3W ultra miniature digital power amplifier board 2.5-5V can be powered by USB