The roller switch has a small lever on the wheel and it activates when something presses on it. It's a particularly sensitive button, perfect for detecting when your invention touches something else. You can also flip the mode switch so that it turns off when the lever is pushed in. Try this space with an LED light to get a fridge light.
EAN:
859477003898
SKU:
103404948
Vendor material number:
3300104
Only available in the online store, not available in classic stores