Why is it illegal? How close can you park to it? What do the colors mean? I heard there are green, yellow and red, but what do they mean?P.S.: I don't live in the US, so I have no idea of any examples involving any streets.
Mine are hard wired, too, but there is a back up battery in a closet downstairs. When mine start chirping for no reason, it is usually that big back up battery that needs to be changed. But, on occasion, grease and airborne dirt and grime clog the little vents which makes the smoke detector think it is hotter than it is (mine have heat sensitivity, too) particularly on a triple digit day. When that happens, I vacuum it off then wash off the plastic cover which stops the chirping. See whether you have a back up battery somewhere in the house and check that too.
bring it with you when you go for another.ask them to check it out.they will be glad to help you.good luck.
You vacuumed for dust particles correct. Then it does need replacing. Those come with a built in battery for backup. This keeps them functioning during a power outage.
I still dont understand why they dont use sultry female voices on their hot box detectors, it would certainly get your attention. There are also DED or dragging equipment detectors, the ones I am familiar with are called talk on defect and wont say anything unless you have something dragging. How they work is a mystery, little men in the tin boxes is my guess. The hot jounral works by infrared scanners. The dragging equipment has paddles that are at the level of the rail and if anything hits them they tip and set off an alarm. The excessive dimension detectors that I am familiar with have light beams that if broken set off an alarm. In the early days of detectors they actually reported to the dispatcher's office who would have to call the train and tell them to stop, this was not always done in a timely manner and caused troubles. Now most of them have a computer generated voice that reads you the important information via the radio.
