A manual fire alarm system consists of notification appliances throughout, activated by manual pull stations at every exit ...

National Fire Code and North Carolina require that commercial Fire Alarm Systems be inspected yearly to ensure proper functionality. Depending upon the type of business and occupancy, NC may require ...

There’s a huge market for 433 MHz alarm ... module to an ESP32 or ESP8266 microcontroller, and have it wait until a specific device squawks out. From there, the code on the ESP can fire off ...