The low-oxygen sensor on our Mr Heater Buddy is pretty sensitive.
You can't see it well in the pics above, but we use it in a enclosed awning off the tailgate of our 80, which has a sleeper conversion. Sometimes when we've been in camp we need to run the 80 to charge the batteries, so we have to clear out of the awning and open it to ventilate, because the exhaust pumps right into it. A little tricky, but no big deal.
The Buddy shuts down when we do this, so the sensor works well enough.
Whether you trust it is a different matter. I'm a little leery myself. I suspect the low-oxygen sensor is set up as a fail-safe, so if it were to fail, it kills the heater. Anyone know? It was never cold enough for us to bother running it all night, so we shut it down anyway.
You can't see it well in the pics above, but we use it in a enclosed awning off the tailgate of our 80, which has a sleeper conversion. Sometimes when we've been in camp we need to run the 80 to charge the batteries, so we have to clear out of the awning and open it to ventilate, because the exhaust pumps right into it. A little tricky, but no big deal.
The Buddy shuts down when we do this, so the sensor works well enough.
Whether you trust it is a different matter. I'm a little leery myself. I suspect the low-oxygen sensor is set up as a fail-safe, so if it were to fail, it kills the heater. Anyone know? It was never cold enough for us to bother running it all night, so we shut it down anyway.