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US$5.34 US$6.29
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Good for the price comes with led indicators. you can use it to control 4 different appliance. internal resistance of each relay is around 67 ohms. please note before you buy it is an active-Low device, which means you supply a low(zero) volt to the input pin to activate each relay.
Impression:Easy to use,portable;
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Great price, great for arduino projects
Impression:works like a charm;
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This product is very good for those who want to start playing with electronics and programming and also to introduce children in this area. A lot of components in a box to keep all under control.
Impression:nice;
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