Emergency call set System 55 pure white glossy Features: Call module with red LED signal light, integrated potential-free contact, optionally switchable buzzer (continuous tone) and the option to set flashing light or continuous light. Pull button with 2.5 m long pull cord with red knob and reassurance light in the button housing, suitable for wall and ceiling mounting. Cancel button with green cancel button. Flush-mounted power supply 250 mA. Optionally, the call set can be expanded to include a duty room unit with integrated sounder for acoustic call signaling, green presence button with presence light and yellow buzzer cancel button. Notes: For installation in accordance with DIN 0834, use an uninterruptible power supply. To expand the emergency call set, the components can be purchased separately.