Fire alarm boxes in Boston were locked to prevent false alarms, therefore delaying the Boston Fire Department by twenty minutes.
To prevent false alarms, keys were entrusted to responsible citizens, Mr. Marinaro writes.
In most cases, 47 is required to hide any dead bodies, to prevent alarms.
The CCTV cameras are designed to withstand vibration and features technologies such as an in-built heater to prevent condensation and alarms to alert of removal or obstruction.
This prevented false alarms from VHF channels that affected a single satellite.
The calculation is typically carried out by a microprocessor which also carries out various checks to validate the measurement and prevent false alarms.
To prevent false alarms, some of the devices take more than 30 seconds to signal a parent that a child has wandered.
Manufacturers recommend careful placement of their products to prevent false alarms (detections not caused by an intruder).
The criterion can be varied based on the nature of the task and the desire to prevent false alarms.
This, the bill's proponents contend, would prevent alarms from being activated by such things as trucks rumbling by or thunderstorms.