Linear DT-2A Administrator guide

256 AVAILABLE CODES ON EACH
SWITCH
You can select any one of 256 codes on
Switch “A” and also any one of 256 codes on
switch “B”
NOTE:
The manufacturer strongly recommends that
you test your equipment frequently. From the
time of installation, it is absolutely necessary
to test the system at least once a week. It is
alsogoodpracticetochangethe9-voltbattery
every six months.
NOTE:
The transmitter transmits continuously with
button depression. An LED lights during
transmission to indicate battery operation.
LIMITED WARRANTY
This product is warranted to the consumer against defects in
material and workmanship for one year from the date of purchase.
Thiswarrantyappliestofirstretailbuyersofnewdevices.Warrantor
will repair, or at its option, replace, any device it finds that requires
service under this warranty, and will return the repaired orreplaced
devicetotheconsumeratthewarrantor’scost.Forwarrantyservice
and shipping instructions contact warrantor at the address shown
below. Devices must be sent to warrantor for service at owner’s
expense. The remedies provided by this warranty are exclusive.
Implied warranties under state law are to the one year period of this
written warranty. Some states do not allow limitations on how long
an implied warranty lasts, so the above limitation may not apply to
you. In order to be protected by this warranty, save your proof of
purchase and send copy with equipment should repair be required.
Thiswarrantygivesyouspecificlegalrights,andyoumay alsohave
other rights which vary from state to state.
All products returned for warranty service require a Return
Product Authorization Number (RPM). Contact Linear Technical
Services at 1-800-421-1587 for an RPA# and other important
details.
IMPORTANT !!!
Linear radio controls provide a reliable communications link and fill
an important need in portable wireless signaling. However, there
are some limitations which must be observed.
*
For U.S. installations only: The radios are required to comply
with FCC Rules and Regulations as Part 15 devices. As such,
they have limited transmitter power and therefore limited
range.
*
Areceivercannotrespondtomorethanonetransmittedsignal
at a time and may be blocked by radio signals that occur on
or near their operating frequencies, regardless of code set-
tings.
*
Changes or modifications to the device may void FCC compli-
ance.
*
Infrequently used radio links should be tested regularly to
protect against undetected interference or fault.
*
A general knowledge of radio and its vagaries should be
gained prior to acting as a wholesale distributor or dealer, and
these facts should be communicated to the ultimate users.
Copyright © 1999 Linear Corporation 207403 G
Delta-3 Series
DT-2A
Two-button Digital
Transmitter
Code Setting Instructions
[phone] •www.linearcorp.com
INSTR,CODE SET,DT-2A,RESONATOR
Linear P/N: 207403 G
Material: 20 Lb Mead Bond
Ink: Black
Scale: 1-1
Side 1 of 2
8.500"
5.500"
Left Button "A"
Right Button "B"
Battery
Test Light

DT-2A TWO-BUTTON TRANSMITTER
CODE SETTING
There are two digital coding switches in the
DT-2A transmitter. Code Switch “A” is
exposed by removing the battery access
cover.Itisthecodingswitchfortheleftbutton
on the front of the transmitter (Button “A”).
Code Switch “B” is the coding switch for the
right button on the front of the transmitter
(Button “B”). The switch is located behind the
back cover of the transmitter. To access
Coding Switch “B”, it is necessary to remove
the screw located in the middle of the back
cover.
SETTING CODE SWITCH “A”
Before removing the battery access door,
loosen battery clip screw and rotate clip away
from door. To open the battery access cover
and gain access to Coding Switch “A”, lift off
the small L-shaped cover by inserting your
thumbnail or a small screwdriver under either
of the two slots at the edge of the case. The
coding switch has eight keys numbered 1-8.
To set a code, select any combination of ON
or OFF positions for the switch keys
numbered 1-8. Use a paper clip or other
pointed object (except a pencil or pen) to set
the keys on the coding switch. The ON
position is when the top of the switch is down.
SETTING CODE SWITCH “B”
To gain access to Coding Switch “B”, first
remove the screw in the middle of the back
cover. Remove the back cover to expose the
8-key switch.
To set a code, select any combination of ON
and OFF positions for the switch keys, in the
same manner as described for Coding Switch
“A”.
CAUTION:
It is not advisable to set a code with all keys
ON, OFF, or alternating ON and OFF,
because these codes are too easy to
duplicate.
TRANSMITTERS CODE MUST
MATCH RECEIVER CODE
Switch “A” is designed for use with a garage
door opener. The code set to Switch “A” must
be identical to the code set in the receiver to
be used in conjunction with Push-button “A”
Switch “B”, under the back cover is designed
for use with less-frequently changed codes,
such as a community gate operated by
Push-button “B”. The code set into Switch “B”
must be identical to the code set in the
receiver to be used in conjunction with
Push-button “B”.
INSTR,CODE SET,DT-2A,RESONATOR
Linear P/N: 207403 G
Material: 20 Lb Mead Bond
Ink: Black
Scale: 1-1
Side 2 of 2
5.500"
8.500"
BATTERY
CODING SWITCH "A"
ROTATE CLIP
AWAY FROM
BATTERY DOOR
5
8
7
1
4
3
O
F
F
O
N
6
Keys 1, 2, 3, 4,
and 6 OFF
Keys 5, 7
and 8 ON
CODING
SWITCH
"A"
CODING
SWITCH
"B"
REAR VIEW WITH
BACK COVER REMOVED
TO ACCESS SWITCH "B"