High-quality restraint system
Smoke detector EN 54-7
High-quality restraint system
Smoke detector EN 54-7


Battery Operated Hold-Open Device

Battery level hold-open device

Suitable for retrofitting

  • Kennzeichnung nach Bauproduktenverordnung
  • Geprüft entsprechend deutscher Industrienorm
  • Geprüft entsprechend harmonisierter europäischer Norm
  • Baustoffe/Bauteile und/oder Bauarten mit allgemeinem bauaufsichtlichem Prüfzeugnis (abP) oder allgemeiner bauaufsichtlicher Zulassung (abZ) . Die Herstellung der Produkte wird bauaufsichtlich überwacht.


Battery-operated door hold-open device with general construction supervision approval. The system with smoke detector, door hold-open device and releasing device operates without external power supply and is approved for fire resisting closures (swing doors). The system is easy to assemble, install and easy to operate.

A solution instead of wood wedges

PRIOFEST B is ideal for all applications where no power outlet is available. PRIOFEST B gives you full flexibility when the installation of power lines is not possible or allowed, or if dangerous work (e.g. welding) needs to be carried out in certain parts of a building.


  • Approved hold-open device
  • CE mark
  • Tested hold-open device
  • Tested release and control electronics
  • Tested electronics and operating software


  • Independent system, enclosure sealable against manipulation
  • System activation in case of smoke detection, failure and sabotage
  • Cabinet with integrated power supply and trigger function
  • Battery pack 12 V DC, approximately 6 month functional life at ambient temperature 25°C - 30°C
  • Ambient temperature range +5°C - +40°C
  • Self-monitoring system: battery voltage/fire detector
  • Additional energy buffer and redundant release mechanism
  • Electromagnet with ca. 120 N holding force
  • External fire detector (CT3002), up to 5 detectors can be connected
  • External hauling cable with mounting plate and anchor plate for door installation
  • Manual system test using manual release/reset
  • LEDs for operation and failure

Material characteristic

  • Cabinet: light grey plastic, similar to RAL 7035
  • Approved quality smoke detector EN 54-7

Dimension drawing

zeichnung priofest

Scope of delivery

  • Door hold-open device including battery pack
  • 1 smoke detector with connecting cable, length 1.50 m
  • 1 tension rod with anchor plate and counter plate fully assembled
  • Mounting hardware for solid wall


  • Wall mounting with only 4 bolts
  • Door opening angle can be freely determined for free passage
  • Tensile strength on hauling cable up to 120 N
  • Installation, testing and maintenance must be carried out by qualified personnel.
  • PRIORIT informs and certifies.
  • Safety inspection is automatically triggered every 24 hours
Catalogue excerpt
Text for tender PRIOFEST B
Montageanleitung PRIOFEST B
  • Quality smoke detector
  • Battery pack