PLN‑1EOL Plena End-of-Line Boards

Plena Public Address & Voice Alarm

Highlights:

  • Pilot tone detection on 100 V loudspeaker lines
  • Voltage free switch 200 V 1 A and LED indications of pilot tone
  • 10 kohm resistors on board for optional supervised connection
  • Daisy chainable for monitoring multiple zones on a single input contact
  • Fits on built-in mounts on selected Bosch loudspeakers
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PLN‑1EOL Plena End-of-Line Boards

The Bosch PLN-1EOL Plena End of Line Board is fitted at the end of a loudspeaker line in a voice alarm system to monitor the line integrity and report any faults.

The board detects the 'always present' 20 kHz pilot tone and illuminates an LED to show correct operation. When there is a fault on the line, the LED goes out maing it easy to spot which speaker line or branch has a problem.

 

Input 1 x
Voltage 100 V loudspeaker line
Detection threshold 5 to 50 V @ 20 kHz
Output 2 x
Indicator Green LED
Contact Normally closed fail safe Bipolar MOS switch 250 Vp 190 mA max
Detection threshold* 5 to 50 V @ 20 kHz (contact and LED)
   
Dimensions (H x W x D) 17 x 60 x 40 mm
Mounting WLS II
Weight Approx. 40 g
   
Operating temperature -10 ºC to +55 ºC (14 ºF to +131 ºF)
Storage and transport temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF)
Relative humidity <95%

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