
DXSR-1504/EC 
DXSR-1508/EC
SUPERVISED 
DIGITAL RECEIVERS
Installation Instructions
(760) 438-7000 • FAX (760) 438- 7043
www.linearcorp.com
FEATURES COMPONENT LOCATIONS
CHANNEL
DISPLAY
CHANNEL BUTTON
ACCESS PANEL
ALARM, STATUS, 
& LOW BATTERY
INDICATORS
CASE LOCKING
SCREW
OPEN CASE TO
VIEW COMPONENTS
The DXSR-1504/EC and DXSR-1508/EC are four and eight channel supervised digital receivers with solid state outputs
PRODUCT DESCRIPTION
designed for use with Linear’s DX and DXS Format /EC transmitters. These receivers can be used in a variety of security 
and remote control applications. When the receiver detects a signal from a transmitter programmed into its memory, the 
appropriate channel output activates. The channel outputs have three optional configurations; 3/4 second momentary, 
toggle on/off, and latch until restored. Status and low battery outputs are for supervisory indications. Cutting jumpers select 
which channels require supervisory status reports from transmitters.
Each unit incorporates a high-sensitivity superheterodyne diversity receiver with two whip antennas. This type of receiver 
provides superior performance by preventing loss of signal due to multi-path interference.
In a typical installation, the receiver is connected to an alarm control panel, door strike, camera, high current relay or some 
other devices. Transmitters are used to activate or control the devices. The receiver should be mounted indoors or inside 
a weather resistant non-metallic housing for outdoor use.
The digital DX/DXS code format features over a million possible codes. The transmitters are precoded at the factory to 
unique codes, so no field coding is required. For versatility, any transmitter can be programmed into any receiver channel. 
Receivers must be programmed to recognize the transmitter’s code before system testing and operation. Up to 32 
transmitters can be programmed into the receiver. Each button on multi-button portable transmitters send a unique code, 
and are programmed as separate transmitters.
The CHANNEL display shows the channels activated and the presence of radio activity. Individual indicators for ALARM, 
STATUS, and LOW BATT show the supervisory status of each receiver channel. All outputs can be configured for normally 
open or normally closed.
The units can be powered from a 10.2-14.4 VDC or 12-16 VAC power source. The units will draw about 35 mA standby 
and up to 120 mA in alarm.
STATUS
INDICATOR
WIRING STRAIN
RELIEF POSTS
LOW BATTERY
INDICATOR
RIGHT ANTENNA
TERMINAL
OUTPUT POLARITY
JUMPER
PROGRAM
JUMPER
TERMINAL
BLOCK
LEFT ANTENNA
TERMINAL
AUDIO TEST
POINT
RADIO ACTIVITY
INDICATOR
GROUND
TEST POINT
CHANNEL 
BUTTONS
OUTPUT
JUMPERS
STATUS
JUMPERS
CHANNEL
DISPLAY
ALARM
INDICATOR
RECESSED WIRING
ACCESS HOLE
OPTION JUMPERS AND CHANNEL BUTTONS DETAIL MOUNT RECEIVER
CHANNEL 1
CHANNEL 2
CHANNEL 5
INSTALL THE TWO 
ANTENNAS UNDER THE 
LEFT AND RIGHT 
ANTENNA TERMINALS
CHANNEL 6
CHANNEL 3
CHANNEL 4
CHANNEL 7
DXSR-1508 ONLY
MOUNT RECEIVER AS HIGH 
AS PRACTICAL USING 
THE SCREWS AND SCREW 
ANCHORS PROVIDED
STATUS 
JUMPER
OUTPUT
CHANNEL 8
CHANNEL BUTTONS ARE USED DURING PROGRAMMING AND 
TO UNLATCH THE CHANNEL'S OUTPUT IN LATCHED MODE
OUTPUT JUMPERS SELECT MOMENTARY, TOGGLE, OR 
LATCHED OUTPUT FOR EACH CHANNEL
WHEN A CHANNEL'S STATUS JUMPER IS CUT, THE CHANNEL 
WILL REQUIRE STATUS TRANSMISSIONS FROM A SUPERVISED 
TRANSMITTER PROGRAMMED INTO THAT CHANNEL
CHANNEL
BUTTON
JUMPER
COVER THE SCREWS WITH THE 
FOUR SCREW HOLE PLUGS PROVIDED
ATTACH ANTENNAS CONNECT TERMINALS
+12V
LOW BAT
NEG
STAT
CH1
CH2
CH3
CH4
MODEL DXSR-1508 ONLY
COM
CH5
CH6
CH7
CH8
COM
TIGHTEN ANTENNA TERMINALS WITH 
ANTENNA WHIPS ABOVE THE SCREW 
AND UNDER THE TERMINAL PLATE 
AS SHOWN (BE SURE CASE COVER 
SLOTS ALIGN WITH ANTENNAS)
SECURE WIRES WITH ZIP-TIE
FROM POWER SOURCE
10.2-14.4 VDC OR 12-16 VAC 
120 mA MINIMUM
NOTE: SEE WIRING EXAMPLES ON 
REVERSE SIDE OF THESE INSTRUCTIONS
OUTPUTS TO DEVICE TO BE TRIGGERED
100 mA MAXIMUM PER OUTPUT
WITH OUTPUT POLARITY JUMPER IN 
PLACE, ALL OUTPUTS WILL SWITCH 
TO COMMON WHEN ACTIVE

+12V
NEG
CONTROL
PANEL
LOW BAT
STAT
RECEIVER
CH1
CH2
+12 AUX
NEGATIVE
WIRING EXAMPLES SELECT OPTIONS
CH3
ZONE 1
CH4
COM
MODEL DXSR-1508 ONLY
COM
CH5
CH6
CH7
EXAMPLE 4-ZONE
CONTROL PANEL
HOOK-UP
NOTES:
1. ZONES ARE NORMALLY OPEN 
WITH END-OF-LINE RESISTORS
2. LOW BATTERY AND STATUS 
OUTPUTS ARE COMBINED TO
COM
ZONE 2
TRIGGER ZONE 4 AS TROUBLE
ZONE 3
ZONE 4
CH8
COM
TO +12 VOLTS
TO RECEIVER
OUTPUT
TO RECEIVER
OUTPUT
EXAMPLE RELAY HOOK-UP
12 VOLT
RELAY
1N4001
DIODE
EXAMPLE BEEPER HOOK-UP
PIEZO BEEPER
EXAMPLE L.E.D. HOOK-UP
TO
+12 VOLTS
TO RECEIVER
OUTPUT
N.C.
N.O.
1K OHM
L.E.D.
COM
TO
+12 VOLTS
SET OUTPUT JUMPERS 
FOR EACH CHANNEL USED
MOMENTARY OUTPUT
JUMPER IN THIS POSITION 
(FACTORY SETTING) CAUSES 
A MOMENTARY 3/4 SECOND 
OUTPUT WITH EACH ACTIVATION
TOGGLE OUTPUT
JUMPER IN THIS POSITION 
CAUSES A TOGGLE OUTPUT, 
EACH ACTIVATION WILL CAUSE 
THE OUTPUT TO SWITCH FROM 
OFF TO ON, OR, ON TO OFF
DOOR & WINDOW 
LATCHING OUTPUT
JUMPER REMOVED CAUSES 
OUTPUT TO LATCH UNTIL RESET 
BY A RESTORE TRANSMISSION 
(DXS-31 DOOR CLOSED) OR RESET 
BY PRESSING THE CHANNEL BUTTON 
(JUMPER CAN BE STORED ON SINGLE PIN)
ADDING TRANSMITTERS REVIEWING MEMORY
CUT STATUS JUMPERS FOR 
ANY CHANNELS THAT REQUIRE 
STATUS TRANSMISSION MONITORING
USE SMALL CUTTERS 
TO CUT JUMPERS
IF NORMALLY CLOSED 
OUTPUTS ARE REQUIRED, 
REMOVE THE OUTPUT 
POLARITY JUMPER
1 2
REMOVE THE PROGRAM JUMPER, 
THE CHANNEL DISPLAY SHOWS "P"
AFTER THE TRANSMITTER IS ENTERED, OR AFTER 5 
SECONDS, THE CHANNEL DISPLAY WILL RETURN TO "P"
REPEAT STEPS 2 & 3 FOR ADDITIONAL TRANSMITTERS 
(UP TO 32 TOTAL, WITH ANY MIX OF CHANNELS) THEN 
REPLACE PROGRAM JUMPER WHEN FINISHED
NOTE: ON MULTI-BUTTON TRANSMITTERS, EACH 
YOU HAVE 5 SECONDS TO ACTIVATE THE 
TRANSMITTER, THE ALARM LED WILL BLINK
BUTTON HAS A UNIQUE CODE, AND IS ADDED TO THE 
RECEIVER SEPARATELY, INTO ANY CHANNEL
REMOVING TRANSMITTERS SYSTEM OPERATION
1 2
REMOVE THE PROGRAM JUMPER, 
THE CHANNEL DISPLAY SHOWS "P"
3
THE DISPLAY WILL CONTINUE TO SHOW THE CHANNEL NUMBER
KEEP HOLDING DOWN THE CHANNEL BUTTON UNTIL THE ALARM 
LED FLASHES TWICE, SIGNALING THE CHANNEL HAS BEEN 
ERASED
REPEAT STEPS 2 & 3 TO ERASE OTHER CHANNELS
REPLACE THE PROGRAM JUMPER WHEN FINISHED
BRIEFLY PRESS THE BUTTON FOR THE 
CHANNEL THAT THE TRANSMITTER 
IS GOING TO BE ADDED INTO, THE CHANNEL 
NUMBER SHOWS ON THE DISPLAY
43
PRESS AND HOLD THE CHANNEL BUTTON FOR 
THE CHANNEL TO ERASE, CONTINUE HOLDING 
DOWN THE BUTTON WHILE THE ALARM LED 
COUNTS THE NUMBER OF TRANSMITTERS
KEEP HOLDING THE BUTTON DOWN
1 2
REMOVE THE PROGRAM JUMPER, 
THE CHANNEL DISPLAY SHOWS "P"
3
R&TTE VAEE 27841 SFT, ETS, 89/336/EEC. EMC
Linear Corporation declares that the apparatus DXSR-1504/EC and DXSR-1508/EC 
complies with the essential requirements and other relevant provisions of Directive 1995/5/EC.
THE CENTER BAR OF THE CHANNEL DISPLAY WILL BLINK 
WHILE THE RECEIVER IS IDLE
THE DECIMAL POINT WILL LIGHT WHEN ANY INCOMING 
RADIO SIGNALS ARE PRESENT
WHEN ANY CHANNELS ARE IN ALARM, OR HAVE ANY SUPERVISORY 
CONDITIONS, THE CHANNEL NUMBER(S) WILL SHOW ON THE
ALARM
CHANNEL DISPLAY, ADVANCING IN ASCENDING ORDER
STATUS
LOW BATT
AS EACH CHANNEL NUMBER IS DISPLAYED, ITS CONDITION IS SHOWN 
ON THE THREE INDICATORS (ALARM, STATUS, OR LOW BATTERY)
WHEN ALL OUTPUTS ARE RESTORED (NON-ALARM CONDITION), 
EITHER BY RESTORE TRANSMISSIONS OR BY MANUALLY RESETING 
LATCHED CHANNELS WITH THE CHANNEL BUTTONS, THE CHANNEL 
DISPLAY WILL RETURN TO THE BLINKING BAR
COUNT THE NUMBER OF TIMES THE ALARM LED 
BLINKS, THIS IS THE NUMBER OF TRANSMITTERS 
PROGRAMMED INTO THE CHANNEL
REPEAT STEPS 2 & 3 TO REVIEW OTHER CHANNELS
REPLACE THE PROGRAM JUMPER WHEN FINISHED
PRESS AND HOLD THE BUTTON FOR THE 
CHANNEL TO REVIEW UNTIL THE ALARM 
LED STARTS TO BLINK, THEN RELEASE 
THE CHANNEL BUTTON
SUPERVISORY CONDITIONS INTERNATIONAL WARRANTY
STATUS MONITORING
IF STATUS MONITORING IS ENABLED FOR A RECEIVER CHANNEL
ALARM
STATUS
LOW BATT
ALARM
STATUS
LOW BATT
(BY CUTTING ITS STATUS JUMPER), A TRANSMITTER SENDING 
STATUS REPORTS MUST BE PROGRAMMED INTO THAT CHANNEL
IF STATUS REPORTS ARE NOT RECEIVED FOR EIGHT HOURS, 
THE CHANNEL NUMBER WILL BE DISPLAYED, THE STATUS 
INDICATOR WILL LIGHT, AND THE STATUS OUTPUT WILL ACTIVATE
NOTE: IF STATUS MONITORING IS ENABLED FOR A CHANNEL, 
ONLY PROGRAM ONE STATUS REPORTING TRANSMITTER 
INTO THAT CHANNEL
TRANSMITTER LOW BATTERY
IF A LOW BATTERY REPORT IS RECEIVED FROM A TRANSMITTER, 
ITS CHANNEL NUMBER WILL BE DISPLAYED, THE LOW BATT 
INDICATOR WILL LIGHT, AND THE LOW BATTERY OUTPUT WILL 
ACTIVATE
THE INDICATION WILL CONTINUE AND THE OUTPUT WILL STAY 
ACTIVATED UNTIL THE TRANSMITTER'S BATTERY IS REPLACED 
This Linear product is warranted against defects in material and 
workmanship for twelve (12) months. The Warranty Expiration Date is 
labeled on the product. This warranty extends only to wholesale 
customers who buy direct from Linear or through Linear’s normal 
distribution channels. Linear does not warrant this product to 
consumers. Consumers should inquire from their selling dealer as to the 
nature of the dealer’s warranty, if any. There are no obligations or
liabilities on the part of Linear Corporation for consequential damages 
arising out of or in connection with us e or performance of this product 
or other indirect damages with respect to loss of property, revenue, or 
profit, or cost of removal, installation, or reinstallation. All implied
warranties, including implied warranties for merchantability and implied 
warranties for fitness, are valid only until Warranty Expiration Date as 
labeled on the product. This Linear Corporation Warranty is in lieu of all
other warranties express or implied.
For warranty service on Linear equipment return product, at sender’s 
expense to: 
Linear Hong Kong 
19/F Hounor Industrial Centre 
6 Sun Yip Street 
Chai Wan, Hong Kong 
Attention: Repairs Department
1 Charges will be made for equipment that is not in warranty, shows
customer abuse, or is damaged by the effects of lightning, water, fire, 
or other abnormal happenings.
1 Customer’s equipment sent in for repair may be repaired or replaced
with new or remanufactured equipment at Linear’s discretion.
REPAIRS POLICY
1 The customer is always responsible for shipping and handling charges
to the repairs facility. Linear will pay return shipping and handling 
charges on “in warranty” products shipped back to the customer. The 
customer will be billed for the return shipping and handling charges on 
“out of warranty” products.
1 There will be a 50% expedite fee for any express requests. 
1 The International Sales Manager must be notified prior to the return of
product to Linear. All international returns must have an International 
Repair Authorization number (IRA#). The number must be marked on 
all packages. Failure to do so will cause delays in processing.
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. 
1 The radios are required to comply with local rules and regulations as
radio devices. As such, they have limited transmitter power and 
therefore limited range.
1 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. 
1 Changes or modifications to the device may void regulatory compliance. 
1 Infrequently used radio links should be tested regularly to protect
against undetected interference or fault.
1 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.
IMPORTANT !!!
Copyright © 2003 Linear Corporation  215648 D