PLENA END-OF-LINE BOARD (6 BOARDS IN PAC

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Key Features

Pilot tone detection on 100 V loudspeaker lines
Voltage free switch 200 V 1 A and LED indications of pilot tone
Daisy chainable for monitoring multiple zones on a single input contact
Fits on built-in mounts on selected Bosch loudspeakers
EN 54-16 certified

BOSCH COMMUNICATION Home & Office Security

PLENA END-OF-LINE BOARD (6 BOARDS IN PAC

Mfr # PLN-1EOL SKU 4039022 UPC 800549134163

$226.90 MSRP $404.00 Save 44%

Regular price saves you $177.10 against MSRP.

Available

Product Overview

PLENA END-OF-LINE BOARD (6 BOARDS IN PAC

Bosch (PLN1EOL) Home & Office Security
End-of-line supervision board - End-of-line supervision boards (set of 6 pieces).
End-of-line supervision board
End-of-line supervision boards (set of 6 pieces).

Technical Specifications

Application/Usage	Alarm System
Application/Usage	Public Address System
Product Type	End of Line (EOL) Supervision Board
Manufacturer Part Number	PLN-1EOL
Packaged Quantity	6
Weight (Approximate)	1.41 oz
Manufacturer	The Bosch Group
Product Name	End-of-line Supervision Board
Brand Name	Bosch
Country of Origin	China
Height	0.7"
Width	2.4"
Depth	1.6"

Marketing Information

6 x PLN-1EOL Plena End of Line Board
1 x Application note

A Plena end-of-line board is a PCB designed to detect the 20 kHz pilot tone generated by a supervised public address or voice alarm system. It activates a voltage free switch in the presence of a 20 kHz signal (pilot tone) above 5 V, as well as an LED for easy visual confirmation of operation.

Functions

Plena end-of-line boards monitor the presence of a pilot tone on a loudspeaker line. The board connects at the end of a loudspeaker line and detects the 20 kHz pilot tone signal. This signal is always present on the line: when back ground music (BGM) is playing, when a call is in progress, and when no signal is present. The 20 kHz tone is inaudible and at a very low level (-20dB). When the pilot tone signal is present, an LED lights up, and a contact on the board is closed. When the pilot tone fails, the contact opens, and the LED goes off. If mounted at the end of the loudspeaker line, this applies to the integrity of the whole line. Presence of the pilot tone signal does not depend on the number of loudspeakers on the line, the load on the line, or the line capacitance. The contact can be connected to a PA system, such as the Bosch Voice Alarm System, to detect and report faults on a loudspeaker line.

Several EOL boards can be daisy-chained to a single fault input. This allows a loudspeaker line with several branches to be monitored.

Since the background music also includes a 20 kHz pilot tone signal, there is no need to interrupt background music.