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Doorchime Unit

Battery
Compartment

Red - Charging
Green - Full

Place the Chime unit onto the charger, the LED on the charger will 

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light up Red to indicate that the batteries are 
charging. When the LED on the charger lights up in Green colour, it 

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is indicating that the charging procedure is complete and the chime 
unit is ready to use. Replace the doorchime unit on the base when 
not in use.

Rechargeable batteries are already inserted on 
purchase.

Changing the rechargeable batteries
Unscrew the screw at the top of the battery compartment.
Slide open the battery compartment door

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. Insert 3 x 1.2 

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volt Ni-Mh batteries (included) into the battery 

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compartment, ensuring the battery polarity matches the 

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internal markings. It will beep twice to indicate that it is 
ready for the new operation code registration (Please see 
Digital Code Set Up). Close the battery door and charge 

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the batteries before use.

Melody Selection

Push Button

Melody Selector

Melody

Additional Byron “SX

” range products can be pur

chased for compatibility

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. SX-4 & SX-41 models will not work with other SX 

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models.

5) Piano
6) Harmony

1) Electro Mechanical - Ding Dong
2) Westminster - 8 notes

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3) Jive
4) Wedding Mar

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7) Dog Barking
8) Ringer

The Melody Selector is located inside the push button unit. It is a small button in the top left corner of the battery 

r compartment marked with “S

“ ”. 

Press the switch once, the melody will change to the next one on the list, there are a total of 8 melodies for selection. The Push Button is pre-set to 
“Electro Mechanical - Ding Dong

” therefore, if no change is required, it should not be adjusted.

The unit comes from the factory on a pre-set radio frequency digital code. However

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, should your door chime activate 

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intermittently for no 

reason at all, it is possible that a similar unit is operating nearby on the same frequency digital 
code. The encoded frequency of the Push Button (transmitter) can be changed to avoid this problem.
The Door Chime unit is equipped with advanced self-learning operation code ability therefore no setting is needed.

Digital code set-up

Push Button

Eg.

Reset the operation code

Re-Set

1. Remove the back of the case from the Bell Push unit. There is a 4-
position dipswitch marked 1,2,3 & 4. Use a

screwdriver to alter the dipswitch levers to the “On/Off” position,

which can be altered to achieve total sixteen (16) possible digital 
codes.

2. Insert a pin into a small hole at the back of Door Chime unit marked 
“re-set

”, then press, it will give 2-beeps sound 

to indicate that it is ready for new code registation.

Door chime unit operation

Sound volume adjustment

Light option control button

Sound Volume Control button is located at the back of item, press the button to adjust the 
sound volume up and down. There is a total of 8 different volume level set, 1=mute and 
8=max, the Door Chime will start to operate at sound level 6.

It is located at the back of item, press the button to adjust the light function. There are 4 light 
display options:
1 – Slow Strobe effect for the duration of 5 seconds.
2 – Fast Strobe effect for the duration of 5 seconds.
3 – LED light will stay on for 2 second then go off for 1 second, twice.
4 – LED light off.

The door chime will start to operate at “Light Off” position

Volume
Control

Light
Control

Remove the Bell Push unit front cover. Remove the locking screw from 
the battery fastener. Insert 2 x CR2032, 3 volt Lithium batteries (Byron SX100) 
in the battery compartment, ensuring the battery polarity matches the internal 
markings. Tighten the screw on the battery fastener to hold the batteries firmly 
in their compartment and refit the front cover.

C

C

R

R 2

2 0

0

0 3

3 2

2

C

CR

R2

2

20

03

3

32

2

2

C

C

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R 2

2 0

0

0 3

3 2

2

Connect the charger with A/C-D/C 9 volt 300mA adaptor (Byron model SX-36 - included), then plug the adaptor into 
any convenient 13 amp wall socket, then it is ready to use.

Charger

Red LED indicator on the top of Door Chime unit will flash when the batteries are running low to the point that they 
need to recharge. Simply place the chime unit onto the charger to recharge the batteries.

3. Select any combination on the Push Button. Press the Push Button, the Door Chime unit will sound to indicate the

new operation code is registerd and memorized, and it will only work with it.

4. To re-set the operation code, simply remove the batteries from the Door Chime unit and rest for 30 seconds, it will

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erase the memory

r . Re-insert the batteries into the Door Chime unit, it will give 2-beeps sound to indicate that it is ready for new code 

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registration. Press the Push Button to confirm the new code is working.

5. Test to ensure correct operation before final installation.

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Digital code set-up 

(cont)

Low battery indicator

Replacing the bell push batteries

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