A wireless access point is required for connecting wireless devices to a network. Most home networks rely on one wireless router combination device to fill this role. A home automation controller enables low-power wireless communications with simple, non-data-intensive devices such as light bulbs and locks.
I fly passenger Airbus A330s and A340s. I've never flown a cargo only aircraft so I can only answer about the passenger Airbus. We can set the temperature in the back cargo compartment (the hold or the bulk we call it) between 5 degrees Celsius and 25 degrees Celsius. The normal position for the selector is around 15 degrees Celsius.
The reason is a structure reason and I will not bore you with all the details. The cargo holds are heated and do not freeze with animals in them. If the cargo holds were not heated it would cause lots of other problems. So on most aircraft the main cabin is the same temperature and pressure as the cargo hold. If you are flying with an dog as I have all over the world you should tell the gate agent you want to see you animal crate be loaded. Crates usually go on last and are secured in the cargo hold with tie downs like a seat belt.