It has 2 of the high capacity 4 Ah 18V batteries with it, for the same price as they often put a pair of those alone on sale for. That makes it a good deal if you need more batteries.
The online manual says it is 45W max. It mentions an indicator light that shows when it is heating, so it might in fact have a temperature sensor on it to provide at least decent temperature control, but who knows if it is a simple thermostat or PID control.
I wouldn’t specifically seek it out, but again, if you already need more Ryobi batteries, you’re basically getting a soldering station for free.