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OPERATING MODE.

The DTMF-3 module decodes DTMF tones 1 to 9, * and # connecting or disconnecting the corresponding 
outputs according to the control signals sent by the emitter.
It includes a password or access code as well as and individual configuration of all outputs in flip-flop or 
timed operating mode. 
It is completely compatible with Cebek DTMF emitters.
It can be installed on a DIN rail Ref. C-7590.

TECHNICAL CHARACTERISTICS.

POWER SUPPLY and INSTALLATION.

Voltage. ....................................................................

12 / 24 V. D.C.

Min./max. Consumption ...........................................................................20 / 420 mA.
Min./Max. DTMF Input Signal. ………………...……......................

-29 / 1 dBm.

Memory capacity/password. .................................................

1-10 tones.

Memory lif eduring. …………………………………………….

100.000 cycles / 100 years of retention.

Protection against polarity inversion. ...........................................

Power entrance.

Max. Load per relay. ..............................................................

400 V. / 5 A.

Outputs operating mode. ...........................................................

Flipflop / Timed (1 to 250 sec).

Main board dimensions. ...........................................................................107 x 132,5 x 30 mm.

POWER SUPPLY

. The DTMF-3 circuit is composed by 2 independent power supply inputs with a common 

negative, one at 12 V DC and one at 24 V DC. For a correct module's operating mode, you have to select 
a voltage among these two possibilities, and do never use both at the same time. Then, if you select 12 or 
24 V, you have to use a power supply correctly filtered. We recommend you to use a short circuit power 
supply with a low ripple level like our FE-123, which has been developed to perfectly answer to the circuit 
needs. Do never use basic power supply neither rectifiers to avoid to damage devices.
Note: Install a fuse and a switch on the mains power input, both are necessary for the module's protection as 
well as for your own safety, as it is required by the “CE” regulations. See the general wiring map.

INSTALLATION.

 The module's installation has to be done in a waterproof place, avoiding any contact 

between circuit and other metallic objects. 
The module can't be installed in place with a high humidity or temperature, or with the possibility to be in 
contact with liquids.  
All connections, as well as the complete read of this present instruction manual have to be done before to 
supply the module. 

WIRING

. In the wiring you have to respect the polarity of different inputs, and the length of the used cable as 

to be as short as possible (mainly for the DTMF connection). If the required distance is superior than 2m, or for 
places including many industrial atmospherics, you have to use shielded cable and to connect the braid to 
the corresponding screw indicated with the ground symbol (negative). 
For the power supply input (power), you have to use parallel cable with a maximum length of 2 m. 

DTMF Emitter-Receiver connection

. The DTMF input allows signals with a minimum of -29 dBm and a 

maximum of 1 dBm, which are internally preamplified before to be used.
The connection between Cebek DTMF emitter and receivers is done connecting the IN input of the receiver 
to the OUT output of the corresponding DTMF clema in the Emitter. The ground terminal of both clemas has 
to be also connected between both modules if they are supplied with different power supplies. 
If modules are supplied wit the same power supply, it is not necessary to connect both grounds.

sec. and maximum 250 sec. the time allowing the output to be automatically activated after the control 
tone. 
If the timing is not finished and you dial again the tone of the same output, the circuit will stop the timing and 
disconnect the output.
If you have a Cebek DTMF emitter and it is not activated the control by password on the receiver neither the 
automatic password function on the emitter, you can reach the program mode for outputs through the fast 
access command (# + 5). 
In the opposite case, you have to press the program code for outputs corresponding to this receiver *00, (* 
Tone , then the 0 tone and again the 0 tone). If the module is protected through password, you have to 
previously introduce this one, before the program code. 
If this operation is correctly done, the Led Prg will light to indicate the outputs program. 
Once the Led Prg lighted, you have to press the number of the output to configure (1 to 8), and then a 
number composed by three digits. This number from 001 to 250 will assign the number of seconds, that after 
each activation, the output will be maintained timed. If the introduced number is 000, the output will 
operate in flip-flop mode. If the introduced number is superior than 250, the receiver will be automatically 
programmed with the maximum value (250).
After introducing the three digits, the output will be programmed and the circuit will leave the program 
mode, repeating this process for the other outputs. 

8 OUTPUTS DTMF RECEIVER.

DTMF-03

DTMF-03

E

N

G

LI

S

H

.

E L E C T R O N I C C I R C U I T S

 

OPERATING MODE.

INDICATORS.

 There are four indicators leds in the circuit, and each one can display several functions. 

Led Pwr. (Red).

 It is maintained lighted when the module is supplied.

Led Tone. (Green).

 It will light during the reception of a DTMF tone. 

Led Prg. (Red).

 It will remain lighted when the circuit is in program mode (password or relay), and is 

deactivated when it come back in standard operating mode. 

Led Pass. (Yellow).

 If it is lighted, it will indicate the receiver operates with password. Otherwise, it will be 

lighted off.

Leds Ld1 to Ld8. (Green).

 They are lighted when the corresponding output is activated, and lighted off at 

the same time, when it is disconnected.

OPERATING MODE

. Each time the module will receive a DTMF code corresponding to a digit from the 

emitter; the circuit will recognize it and activate the corresponding output. If the module has activated the 
access through a password, before each output number, you have to introduce the password.
Tones corresponding to digit 1 to 8 will independently activate the corresponding output and disconnect it 
when the programmed timing is finished. If they are configured as flip-flop, outputs will be activated till you 
send again the same output number, at this moment they will be disconnected. 
When any output is activated, in Flip-Flop or timed mode, a new control tone from this output will deactivate 
it, doing an individual reset. 
The tone corresponding to the digit Nº0 will disconnect at the same time all activated outputs, 
independently of its configuration mode (flip-flop or timed), doing an common reset.
Tones “+” and “#” don't have any influence on the outputs connection, but they are used to program 
outputs and to program password codes. 

SPECIAL FUNCTIONS

. If the circuit is controlled by a Cebek DTMF emitter, you can reach different functions 

offered by the emitter, using fast access commands allowing to program the receiver. 

To program Output

Flip-Flop/Timed Relays configuration

. Each output can be configured in Flip-Flop or 

Timed operating mode.  
With the Flip-Flop operating mode, each output control tone will alternately activate and deactivate the 
output like a common switch. If you select a timed operating mode, you can adjust between minimum 1 

GENERAL WIRING MAP.

Fig. 1.  Connection between Emitter and DTMF Receiver.

O

U

T

D

T

M

F

(Receiver)

IN

(Emitter)

D

T

M

F

To program the password

. Cebek receivers can operate with a password. For its security, once the password 

programmed on the receiver, this one doesn't accept any operation on it, concerning control or program 
functions, if you don't previously insert the corresponding password. Do not forget that of you don't remember 
or don't correctly introduce this security code, you could not operate with the receiver, and you can 
deactivate it. Then you should send back to our distributor for a complete system's reset. 

For this reason, we suggest you to pay attention during the record operation, strictly respecting the 
instructions described into the corresponding supplied manual. Cebek can not be responsible for the 
receivers' blocking due to such reasons, being excluded of the product's warranty.   
If you have a Cebek DTMF emitter and the control by password on the receiver is not activated neither the 
automatic password on the emitter, you can directly use the fast Access Command, pressing “#” and “4” 
digits to reach the program mode.
In the opposite case, you have to press the program code for outputs corresponding to this receiver *99, (* 
Tone , then the 9 tone and again the 9 tone). If the module is protected through password, you have to 
previously introduce this one, before the program code.
If this operation is correctly done, the Led Prg will light to indicate the outputs program.
Then, you can introduce one by one, pressing the corresponding digit, the different tones to store. Each 
pulse has to be clearly done, avoiding to press at the same time two. It is also highly recommended to firstly 
select the password to avoid to doubt during the recording operating.  
Finally, a last pulse on the “#” digit, will store on the receiver's memory all introduced tones, and 
automatically activating its password (Less Pass lighted without intermittence).
To configure the password you have to select between 1 tone as minimum and 10 tones as maximum, 
corresponding to the tones from 0 to 9.
If you overcome the maximum capacity of the memory (10 tones), if you don't press the “#” digit after the 
code, or if you wait more than 5 sec. between pulse and pulse, the circuit will cancel the record, leaving the 
program mode without making any change on the memory. 

To cancel the password

. The access through password, once selected, can be only deactivated if you 

erase it into the circuit's memory. 
The process will be the same than the used to program the password. Firstly, you have to introduce the valid 
password, then the program code of the password (*99) and at the end to press the “#” digit. 
If the operation is correctly done, the Led Prg will confirm it with a fast intermittent light before to light off, and 
the module will leave the program mode, deactivating the access through password and erasing the 
memory. 

Fig. 3.  To program the receiver using its own codes.

To program the Password

To eliminate the Password

To program Relays

 Password

nº Relay

(1 to 8)

,

,

9

9
0

0

---------------

Relay Tim.

(000 to 250)

,

,

9

9
0

0

,

9

9

,

9

9

Step 1

Step 2

Step 3

#

#

DTMF Input

Prg

Tone

Pass

Pwr

Ld1

Ld2

Ld3

Ld4

Ld5

Ld6

Ld7

Ld8

Relay 1

Relay 2

Relay 3

Relay 4

Relay 5

Relay 6

Relay 7

Relay 8

In

DTMF

POWER

O

U

T

 1

O

U

T

 2

O

U

T

 3

O

U

T

 4

O

U

T

 5

O

U

T

 6

O

U

T

 7

O

U

T

 8

+12

+24

Power Supply 24 V.

Power Supply 12 V.

NO

NC

COMMON

NO

NC

NO

NC

COMMON

NO

NC

COMMON

NO

NC

COMMON

NO

NC

COMMON

NO

NC

COMMON

NO

NC

COMMON

Output 1

Output 2

Output 3

Output 4

Output 5

Output 6

Output 7

Output 8

Fig. 2.  Fast Access Commands for Emitter´s special functions.

Automatic Password (Deactivation)

Automatic Password, (Activation)

To program Emitter Password

To program Receiver Password

To program Relays timing

---------------

---------------

Password

 Password

nº Relay

Step 1

Step 2

Step 3

+

+

+

+

+

0

0

5

5

#

#
#

#
#

#
#

#
#

#

---------------

---------------

Relay Tim.

1

1
2

2

COMMON

All the module’s CEBEK have 

3 years of total warranty 

in thecnical

repairing, and spares from the date of buy.
CEBEK is trade make of FADISEL S.L. more than 300 module’s are 
avaible in stock for any purpose 

request our CATALOGUE, 

or visit our 

Web site 

www.cebek.com

For any questions or more information: 

By Fax. 

(24h.) +34.93.432.29.95 

By Mail: 

C/ 

Quetzal, 17-21, Entlo. 2º (08014) BARCELONA - SPAIN or 

By E-Mail: [email protected]

Keep you invoice. 

For any repairing could you send this with module. Else, the module will 

lost the warranty.

TECHNICAL SUPPORT AND INFORMATION.

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