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relay_1channel
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1 channel Relay Module

$0.991pcs
Relay is automatic switch that uses a small current to control a large current.
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relay_2channel
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2 channel Relay Module

$1.791 PCS
The 2-channel relay module places two relays on the same PCB, allowing them to share the input power supply. This reduces wiring and minimizes the overall size.
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nfrared Remote Control Four-Channel Relay Module-3
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4 channel Relay Module

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$4.291 PCS
The 4-channel relay module consists of four relays, offering a more balanced choice in terms of cost and capacity. It is well-suited for covering the majority of advanced design applications.
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relay_8channel
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Relay Module 8 channel

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$4.991 PCS
The 8-channel relay module uses a single power input to supply eight relays, covering many application scenarios and reducing concerns about insufficient relay count.
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