1/2/4/6/8 channel relay module, 5V12V24V, with optocoupler isolation relay module output high/low level trigger electronic DIY

1/2/4/6/8 channel relay module, 5V12V24V, with optocoupler isolation relay module output high/low level trigger electronic DIY
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sku: 1005001903120199
$1.12
Shipping from: China
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