"As I entered the room I looked around and saw your note about how to react to carbon monoxide alarm. which seemed helpful. However, as I work as an expert witness in carbon monoxide poisoning cases, I looked for your CO detector and found a hole on the upper wall where I assume it had been at one time. There was nothing there. I have pictures to show the location. Per California Health and Safety Code 17926 there must be detectors in the properties. I am hoping that you can explain this to me. I...