Chamberlain Elite EL25 Installation Manual page 7

Wiring 1 EL25 to Telco Line
The bypass board allows the EL25 to be disconnected without interrupting normal telephone operation.
•
When the EL25 unit is in use , the bypass switch must be set to the operate position.
• When the EL25 unit is disconnected , the bypass switch must be set to the bypass position.
Home Phone
Ring
Tip
Important: The Voltmeter measurement
between the Tip and Ring should read
between 48 and 53 VDC.
Use 18-24 AWG
Do Not overload the removable terminal
block connectors. One wire per hole.
Bypass Board
(Mount in the House)
OPERATE BYPASS
4 3 2 1
Ring Tip Ring Tip
HOME TELCO
SYSTEM
2 twisted pair
Output Board
Page 6
Important: The Bypass
Board (located inside
the property) allows
access to the phone in
case the EL25 fails.
Alarm System Position
Tip
Ring
(NOT Provided)
Note: If the EL25 unit will be used in
conjunction with an alarm system,
you must connect the telephone line
to the alarm system first. If the units
are not connected in this order, they
will not operate properly.
NO
NC
Com
Resident
NO
Ring
NC
3
8
4
Tip Com
NO
NC
Telco
Com
Ring
1
9
2
Tip
NO
NC
Com
(See page 2)
Never run Data wires and
High Voltage wires in the
s a m e c o n d u i t . T h e h i g h
voltage wires may interfere
with the data wires, possibly
c a u s i n g t h e s y s t e m t o
malfunction.
Telco Entrance Box
Demarcation Point
10
11
12
13