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XH-M609 lithium battery over discharge module under low voltage disconnection output 6-60V DC voltage protection

XH-A158 PAM8403 Ultra Clear Bluetooth 5.0 Amplifier Board Small Power 2 * 5W Dual Channel Wireless Speaker DC5V

M18/28/38 DIY wireless Bluetooth audio module 4.2 high fidelity lossless car audio headphone amplifier board

M18/28/38 DIY wireless Bluetooth audio module 4.2 high fidelity lossless car audio headphone amplifier board

M18/28/38 DIY wireless Bluetooth audio module 4.2 high fidelity lossless car audio headphone amplifier board

Single key bistable one key start stop self-locking relay module microcontroller controlled relay 5V1V24V

XY-L30A battery charging control module digital full charge power-off overcharge protection switch 6-60V

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