10pcs/lot 4 channel relay module Microcontroller development board relay expansion board support AVR/51/PIC channel relay module
![10pcs/lot 4 channel relay module Microcontroller development board relay expansion board support AVR/51/PIC channel relay module](http://ae01.alicdn.com/kf/H237fbc68ede443f1a51de3613c7cef7dn/10pcs-lot-4-channel-relay-module-Microcontroller-development-board-relay-expansion-board-support-AVR-51-PIC.jpg_350x350.jpg)
sku: 4000390773159
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$23.50
Shipping from: China
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