The Cooler IoT solution seems a bit out of place in this awards. I mean, it's a solution and not a development kit, or board or component of IoT. Even the description of the category says:
"The Hardware award recognizes** components** that every IoT designer should have within reach, from microcontrollers to plug-and-play kits to all-in-one development boards."
Seems that voting would be unfair between this and all the other nominees which are indeed boards, kits, and components -specifically "hardware" and not complete solutions.
Just my 2cents