-12 extensions selector switch
-Built-in relay latch timer for activation of external visible or audible 24V DC signal units
-Alarm stop button
-Noise compensated microphone
-Optical LED call indication at front (in addition to audible call signal)
-Flush mounted
-Wall mounting with corresponding metal cabinet type MBOKS
-Desk mounting with corresponding wooden cabinet type VSPK
-Suitable for installation in control rooms and noisy areas like steering gear, engine- and thruster rooms, etc