Telescopic function for bridging unfavorable fall situations. Connection to 230 V mains and supply of the hold-open device with 24 V DC. Power supply to the hold-open device is interrupted in the event of an alarm, and doors close. Integrated smoke switch with automatic alarm threshold tracking compensates for slight soiling of the smoke chamber, thus increasing the service life. Optical display of the current status of the hold-open device. Additional smoke switches can be connected. Areas of application: approved in all GEZE hold-open devices for early detection of fire and smoke, particularly in difficult fall situations, such as insufficient space above the smoke chamber. Mounting above the door opening on the vertical wall is possible, as well as mounting with surface-mounted cable feed.

Further technical features: smoke detection using the scattered light principle, LED display included.

Scope of delivery: with mounting material.