Fireguard FG 323 series Heat detectors provide an effective solution and fast
response in case of intense fires under rapid temperature rise situation.
The FG 323
series heat detector operates by using a matched pair of thermistors to sense heat.
The FG 323 range is classified according to EN54-5 as Rate-of-Rise and fixed
temperature detectors. Fixed temperature thermistor will respond only when the alarm
threshold is reached.Rate-of-Rise thermistor measures the rate of increase in
temperature.