A status signal is a type of beacon which tends to have 2 or more colours to signify the varying status of a machine, process or situation. Typical colours for a status signal are Red/Green and Red/Amber/Green but this is by no means fixed as LED’s are now readily available in various pure colours from Infra-Red to Ultra Violet. The […]
Xenon strobes work by discharging the energy stored in a capacitor through a special flash tube filled with xenon gas at a low pressure to produce a very short burst of high intensity white light. It produces it flash in 5 steps: The energy storage capacitor connected across the flash tube is charged from the power supply to a voltage […]
Sounders and sirens are used to attract attention particularly when an immediate response is required. To alert a person, it is recommended that a sounder or siren reaches between 5 and 15 dB(A) louder than the background noise of the given area. There are several things to consider before selecting a sounder or a siren: The sound pressure level achieved […]