Wall Adapter Power Supply 7.5VDC 1A (American Standard) Shipping:4-6 Days you can easily cover it

you can easily cover it with one hand

* 6uA/MHz (operates less than 5mW at full operation)

The weather itself can be an accessible yet interesting subject for kids to study

It's got everything you want and more:

consider our QTR-3RC reflectance sensor array

Wall Adapter Power Supply 7.5VDC 1A (American Standard) Shipping:4-6 Days you can easily cover itThis is a 7. 5V wall adapter. It is not commonly available in the market. The best part of this adapter is that it allows Arduino project to run independently. For some projects need motor or servo, 5V do not have sufficient power, 12V is kind of over supply that may cause potential overheated problem. 7. 5V is just the right voltage for those projects, provides safe and enough power. It comes with a DC2. 1 connector which is Arduino power jack