The Pyrotector Model 30-3003 Explosion Proof Smoke Detector is a sensitive yet rugged protection device that is designed for use in hazardous industrial and commercial locations.
HN-A500I is a high efficient 500W Power/Booster amplifier provides audio signal amplification for public address and voice alarm system, It is reliable, efficient and light in weight.
For a hard-working professional microphone designed to withstand the rigours of speech or music performances, try the HN-EDA91 from Honeywell. You can turn it on or off with the simple push of a butto