The PSA-4 panel is meant for acoustic notification on interferences received. It enables fast identification of incoming signal, as it has 4 sirens with a programmable modulation of sound.
Three sirens are designed for work with 220 (110) V DC voltage, and one for work with guaranteed 230 V AC. The panel is dedicated to cooperate with the acoustics steering module – MWA, and each siren is steered with a separate output.