Yes, all outdoor versions could be used in indoor applications.
You can not use indoor version for outdoor application.
Class 2 transformers have limited output voltage, wattage and current protection.
Maximum output voltage is 30 VAC and 60 VDC (continuous). The maximum output wattage is 96W for 24V and 60W for 12V. The maximum circuit breaker for non-inherently limited transformers is 4 Amps for 24V and 5 Amps for 12V. Check if your transformer matches these three requirements.
There are two UL standards for class 2 transformers: UL1310 and UL1585-3. Please be aware, UL1585-3 does not cover DC transformers. In order to avoid possible inspection issue, make sure to choose the correct transformer with correct certification.
The wire drop voltage is a difference between voltage on a start and end or the wire. The longer distance, higher current and smaller wire diameter the higher drop voltage. These three parameters interconnected, so to know two of the we can calculate the third one.Here is the wire drop voltage chart where you find max. load wattage for given distance and AWG, max. distance at given wattage and AWG or AWG at given distance and load wattage: