4
5. CONNECTIONS
1. Telephone Ringer Selector Switch – This switch enables/disables ringing of the telephones. When positioned to the left, this switch
enables ringing of the telephones.
2. Doorbell/Door Strike/Sound system mute (Relay Contacts) Connecting Jack – The center two pins connect to the doorbell button
and will ring an existing or new doorbell. The adjacent pair will provide a six second closure upon door button depression or
incoming telephone line ringing (this is used to mute a sound system). The adjacent pair offers a user selectable (*8) relay closure
than can be used to operate a door strike or other relay controlled ancillary devices.
3. Door Speaker Connecting Jacks – Each of these jacks enables a connection to door speaker for communicating to a door speaker.
4. Telephone Line (In & Out) Connecting Jack – This jack provides connection to the incoming telephone line on the inner pair and
connection to household telephone(s) on the outer pair.
5. Power Status LED – When "ON," this lamp indicates the presence of power to the unit, when "OFF," it indicates the absence of
power to the unit.
6. Power Supply Jack – This jack is the connecting point for AC power supply to the unit; The supply is typically 16 VAC at a mini-
mum of 250 mA, but can be as high as 20Vac, which will provide greater ringing power to the telephones. Can also use a 16-24
VDC supply. (Note: Do not exceed 24 VDC or serious damage can occur to the controller unit)
CAUTION:
For added protection we strongly recommend you use surge protectors on both your power supply and on the C/O
line (phone line) to protect against lightning and other energy surges.
1
2
3
4
5
6
fig 1
Telephone
Ring On/Off
Remote
Trigger
Tele-
DoorBell
Telephone
Line (In & Out)
Power Plug
16VAC
2
1
Existing
doorbell
transformer
Existing doorbell switch
(to be removed)
Disconnect switch and
connect wires together
Wire is reconnected
to the TDB-1
120V AC
already
connected
RJ11 Modular Wire
(Supplied with Unit)
RJ45 Modular Wire
(Supplied with Unit)
16V AC
OUTPUT
22 Gauge
4 Conductor wire
Max length 250 ft.
(not supplied)
Note: Center pair are phone
line into DTI-1. Outer pair
are to the phones
TDB-2
To second TDB-1
or other device such
as the TPM-1 paging
module
OUT
IN
OUT
IN
RJ31X
(CA38A)
Data Jack
(supplied)
Phone
Jack
OUT
IN
OUT
IN
RJ31X
(CA38A)
Alarm Jack
(not supplied)
Alarm jack connection
only if alarm monitored
TELCO in line
from phone company
Power Supply
(ex. 12VDC)
MUTE
INPUT
Used to mute a sound
system such as a Russound
CA4.4pi or PR-4Z
5
PRESS
8
PRESS
Used to activate devices
such as remote door unlock
and gate openers
+
–
BLACK
GREEN
RED
YELLOW
NOTE: In cases where no
Doorbell Unit is used, a
300 Ohm resistor must
be wired between the
yellow and black leads of
the RJ-11 Modular Wire
fig 2
