4 channel useful shield relay module stable outlet control board for arduino

4 channel useful shield relay module stable outlet control board for arduino
sku: 569747991
ACCORDING TO OUR RECORDS THIS PRODUCT IS NOT AVAILABLE NOW
$7.18
Shipping from: China
   Description
relay type: electromechanical relay channels. communication format: ttl voltage. 4-way relay module, connectors: screw terminals. 5v voltage, shield compatibility for arduino. the control pin has a pull-down circuit to prevent malfunction relay vacant.
   Technical Details
_GoogleCategoryID: 499932
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