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FainWan 2pcs 2 Channel Relay Module with Optocoupler 5V Active Low Level Amplifier Trigger JD VCC Relay Power VCC Power auspowers_batchfive this master set has ergonomically This flexible design is this master set has ergonomically designed non slip rubber handle Slide them all the way in and they should “lock” in place It can also be directly controlled standard interface by microcontroller to implement various of function experiments together with breadboard and Dupont thread is convenient to control all kinds of electrical appliances and large current devices
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