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which can drive the relay unit
COM1 - COM8 Relay Common Interface3
automatic gain control
Gearbox: 1:48
Single Side Tinned Prototype PCB Universal Board ( 9x15cm / 10x15cm ) Size:10x15cm which can drive the relayFeatures 100% Brand new! Premium single side prototype PCB printed circuit board, universal strip breadboard. All holes are plated through, smooth and clear, both sides are identical. Sturdy and easy to use, the plated holes are pre tinned and very solid which makes it very easy to solder components on. Flexible using, you also can cut these boards into any shape any size when you need. Widely used for Arduino, various electronic and soldering
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