Fire, smoke and intrusion alarm and signaling systems, comprised of fire alarms, smoke alarms and intrusion alarms, fire, smoke and intrusion sensors, computer controls modules, and testing, signaling, measuring and monitoring devices for sending, transmitting, receiving and processing electronic, optical, acoustical and optoelectronic pulses and rays, namely, video, audio and data encoders, multiplexers, modulators, receivers, modems, decoders, scales, timers, counters, voltage meters, curre...