Relay Module HFD4/3-S 3.3 5V STM32 51 Single-chip Microcomputer Relay Board for Signal Switching or ON-OFF Control

SKU: 9SIC78VM0F3291

Description

Relay Module HFD4/3-S 3.3 5V STM32 51 Single-chip Microcomputer Relay Board for Signal Switching or ON-OFF Control
$17.28
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