EZ-B v4 & IoTiny Datasheet & Communication Protocol
Every electrical component that you will come across has a "Data Sheet". Every microchip, every resistor, even every diode.
The datasheet is a document that is published by the manufacturer which explains the specific characteristics. Inside the datasheet, you will find information about operating temperature limitations, power consumption, and a lot more.
This datasheet (link below) is packed full of technical information regarding the EZ-B v4 and IoTiny. As a user of the Developer Kit or EZ-B v4 for a custom robot, it is recommended to review the datasheet.