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The alarm points on carbon monoxide detectors are not a simple alarm level (as in smoke detectors) but are a concentration-time function. At lower concentrations, e.g. 100 parts per million (PPM), the detector does not sound an alarm for many tens of minutes. At 400 PPM, the alarm sounds within a few minutes.
In its simplest form, the user activates the alarm by pulling the handle down, which completes a circuit and locks the handle in the activated position, sending an alarm to the fire alarm control panel. After operation, most fire alarm pull stations must be restored to the ready position using a special tool or key for the panel to be reset.
Make sure to install extra carbon monoxide detectors 5 to 20 feet from sources of CO gas, including the stove, dryer, or furnace, and follow the manufacturer's guidelines for specific ...
Carbon monoxide poisoning typically occurs from breathing in carbon monoxide (CO) at excessive levels. [3] Symptoms are often described as " flu -like" and commonly include headache , dizziness , weakness, vomiting, chest pain , and confusion . [ 1 ]
So CO detectors should be installed in each floor of your home at least 5 feet above ground — ideally near sleeping areas and in the same room as gas- or wood-burning appliances — and tested ...
Coded panels were the earliest type of central fire alarm control, and were made during the 1800s to the 1970s. A coded panel is similar in many ways to a modern conventional panel (described below), except each zone was connected to its own code wheel, which, depending on the way the panel was set up, would either do sets of four rounds of code until the initiating pull station was reset ...
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