The Relay Module controls electrical switching operations, enabling devices to be turned on or off safely through software commands with reliable state monitoring support.

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relay_1channel
relay_size
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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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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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Light Sensor Switch1
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DC 12V Light Sensor Switch Photosensitive Relay Module

$4.991pcs
integrates a photoresistor and a relay, use 12V power,  suitable for light-sensing control scenarios.
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ldr photoresistor relay module

$1.721pcs
A Light Dependent Resistor (LDR) relay switch is an intelligent electronic control system that automatically turns electrical devices ON or OFF based on ambient light intensity.
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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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