INSTR,INST,ACT-21/-22
Linear P/N: 212208 B
Size: 8.500" X 11.000"
Material: 20 Lb. Mead Bond
Ink: Black
Scale: 1-1
This device complies with FCC Part 15. Operation is subject
to the following two conditions: (1) This device may not
cause harmful interference and (2) this device must accept
any interference received, including interference that may
cause undesired operation.
ACT-21
ACT-22
DIGITAL
TRANSMITTERS
Operation Instructions
(800) 421-1587 •www.linearcorp.com
DESCRIPTION
The ACT-21 and ACT-22 digital transmitters are wireless radio controls designed for use with
AM/II or AccessPro receivers. In addition the MegaCode code is compatible with Linear
MegaCode receivers and can be used with MDR and MDRG type garage door and gate
receivers.
The MegaCode radio format provides unparalleled security. The format provides more than
1 million different codes.
MegaCode transmitters and receivers do not contain a typical “coding switch”. Each
transmitter is permanently coded at the factory to a unique code. The receiver is programmed
by “learning” the transmitter’s unique digital code. The receiver will activate only from these
“memorized” transmitters.
Block coded versions of these transmitters (ACT-21 and ACT-22) can be ordered from the
factory. Block codes are divided up as 16facility codes, and 65,500 sequential local ID codes.
This will save time when programming and maintaining large numbers of transmitters in an
application.
The transmitters are powered from two 3-volt “button cell” batteries (type CR1616, CR1620,
DL1620 or equivalent). The batteries should last up to 5 years with normal use.
To conserve battery life, an internal timer limits the transmission duration to 10 seconds if a
transmitter button is held down.
TO PREPARE TO USE
Program transmitter into receiver. Refer to the instructions provided
with the receiver to set it into a “learning” mode. Activate the transmitter
to program it into the receiver.
Receivers that accept “Block Coding” can be programmed to accept a
user defined block of ID codes, in addition to “learning” individual
transmitter “ID’s”.
TO REPLACE BATTERIES
STEP 1
Open the case.
Remove the two retaining screws from the
rear of the case. Hold the case halves together and flip the transmitter
over. Lay the unit on a table with the button(s) facing up. Carefully
remove the case top.
TO REPLACE BATTERIES
STEP 2
Remove the board.
Very carefully remove the circuit board
and set it aside. Notice how the batteries are placed in the bottom case
of the transmitter.
TO REPLACE BATTERIES
STEP 3
Replace the batteries.
Remove the old batteries, noting their
location and placement. Replace the batteries with fresh type CR1616,
CR1620 or DL1620 batteries. Both batteries must be the same type.
TO REPLACE BATTERIES
STEP 4
Close the case.
Carefully place the circuit board into the case
over the batteries. Align the board on the two case alignment posts.
Hook the top case onto the bottom case on the button end. Squeeze
the case together, flip it over and replace the two case screws. Test
the transmitter for proper operation.
LINEAR LIMITED WARRANTY
This product is warranted to the consumer against defects in material and workmanship for one year
from the date of purchase. This warranty applies to first retail buyers of new devices. Warrantor will
repair, or at its option, replace, any device it finds that requires service under this warranty, and will
return the repaired or replaced device to the consumer at the warrantor’s cost. For warranty service
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. This warranty gives you specific legal rights, and you may also
have other rights which vary from state to state.
All products returned for warranty service require a Return Product Authorization Number
(RPA#). 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.
✶A receiver cannot respond to more than one transmitted signal at a time and may be blocked by
radio signals that occur on or near their operating frequencies, regardless of code settings.
✶Changes or modifications to the device may void FCC compliance.
✶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 212208 B
SEND A SIGNAL TO PROGRAM THE
RECEIVER BY PRESSING THE BUTTON
TO BE USED WITH THAT RECEIVER.
RECEIVER MUST BE IN A
"LEARN" MODE TO ACCEPT
THE TRANSMITTER
PLACE FRESH BATTERIES
ON SPRING IN HOLDER
PLUS (+) SIDE UP
MINUS (-) SIDE UP
WARNING: DO NOT
INSTALL BATTERIES
BACKWARDS, UNIT
WILL BE DAMAGED!
BE SURE
BATTERY SPRING
IS IN PLACE
BATTERY TYPE
CR1616, CR1620
OR DL1620
PLACE BOARD
ON ALIGNMENT
POSTS
HOOK CASE
HALVES
TOGETHER
SQUEEZE
CASE TOGETHER,
FLIP OVER AND
REPLACE SCREWS
CAUTION: DO NOT
TOUCH OR ADJUST
ANY PARTS ON BOARD
CAREFULLY
REMOVE THE
CIRCUIT BOARD
NOTE BATTERY
LOCATIONS
BOARD
ALIGNMENT
POSTS
WARNING:
HOLD BOARD BY
EDGES ONLY
REMOVE TWO
CASE SCREWS
HOLD CASE TOGETHER
AND FLIP OVER
CAREFULLY
LIFT TOP OF
CASE OFF
