This protoboard is double sided, meaning that you can easily put components on both sides. It is perfect for all your DIY projects, as with its 0.1" (2.54mm) pitch it fits nearly all the through hole components.
This is a normally closed G1/4 12VDC electric solenoid valves with barbed inlet and outlet ports, great for projects involving low viscosity fluid control. You can find it ubiquitous on applications like automatic faucets, foot operated faucets, drinking fountains etc.
Ever lost something in a hole (your keys maybe ?), wanted to see inside a closed device or anything else where an endoscope might be useful (for the keys part, the included magnet &/OR hook is the best part) ?
In all those cases, this endoscope could have saved you :)
That product is just perfect to have around, just in case, or if you have something...