Audible and lighted sign AL4

Versatile audible and lighted sign

It is the ideal complement to any gas detection installation and can be used to prohibit access, evacuate an area, or indicate the nature of the danger. It is particuliarly appreciated for the following applications:

• In boiler rooms on incoming access points
• Parking lot entrances and exits
• Electric vehicle charging rooms
• Gas cylinder storage rooms
• Universities, laboratories with risk of anoxia (nitrogen)
• Hospitals, MRI rooms with helium detection
• Access doors to specific areas
• Vinification rooms

Main assets of the audible and light sign AL4

• 72 dB buzzer (can be disconnected)
• 100% customizable alert message
• IP65 waterproofing (outdoor and indoor use)
• Multi-voltage 19/60 Vdc and 230 Vac
• Reverse polarity protection
• Easy installation, connection at the bottom
• Small size, compact footprint
• Low power consumption

Technical specifications of audible and lighted sign AL4 

• Power supply: 12-24 Vcc or 110-230 Vca
• Light output: 75 cd with opaque text (see photo) or 451 cd without opaque text
• Sound power: Buzzer 72 dB @ 1 m (buzzer disconnectable)
  Available modes (selectable via 4 internal jumpers):
  - JP1 O = Full power / F = Low power
  - JP2 O = Fixed LED / F = Flashing LED – 60 flashes/minute
  - JP3 O = Continuous sound / F = Intermittent sound
  - JP4 O = Buzzer active / F = Buzzer inactive
• Housing material: Self-extinguishing white polycarbonate with transparent cover
• IP rating: IP65
• Inputs: 4 pre-drilled 20 mm inputs
• Wiring: Screw terminal block, max. 2,5 mm2
• Device mounting type: Surface-mounted 
• Operating temperature: -15°C to +50° C
• Dimensions (w x h x d): 325 x 130 x 80 mm
• Weight: 0.6 Kg
• Finishing: White background with transparent cover and texts in red letters, customizable on request
• Standard texts:
  - Forbidden entry
  - Immediate evacuation
  - Gas hazard
• On demand:
  - Anoxia danger
  - CO2 hazard
  - Gas alarm
  - H2S detection