So I buy one of these things; install it; put it online, but i'm not responsible for it? I don't understand. Would you be happy with that defence from a hotel

So I buy one of these things; install it; put it online, but i'm not responsible for it? I don't understand. Would you be happy with that defence from a hotel if your wife stayed in a hotel room and was killed by carbon monoxide from a faulty heater?