4-way Relay Module / Expansion Board / Bi-directional Optocoupler Isolation / High and Low Level Optional 5/12/24V / Optional

4-way Relay Module / Expansion Board / Bi-directional Optocoupler Isolation / High and Low Level Optional 5/12/24V / Optional
sku: 33004597773
$12.42
Shipping from: China
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