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Important

1. Mounting any wire free object onto UPVC will reduce the operating range-as UPVC doors contain metal and act as a shield to the wire free signal.
2. Do not expose the Door Chime unit to rain or immerse in water.
3. Do not mount the either unit close to a fireplace or expose to high temperatures.
4. Do not drop the units or subject them to excessive blows.
5. The Converter and Door Chime units are designed for indoor use only.
6. Make sure no naked flame sources, such as lighted candles are placed on the unit.
7. The unit should not be exposed to dripping or splashing and no objects filled with liquids, such as vases should be placed on the unit.
8. Do not place near a PIR. It may interfere with your Door Chime.
9. Always use recommended batteries as these will give longer service and are less likely to leak.
10. Do not use different type of batteries, or mix up old and new batteries.
11. Do not leave exhausted batteries in either unit. If leaving the doorbell for long periods, remove the battery from the compartment to prevent 
leakage.
12. Please dispose of old, defective batteries in an environmentally friendly manner in accordance with the relevant legislation.
13. CAUTION: Replace only with the same or equivalent type of battery that is recommended by the manufacturer.
14. CAUTION: Danger of explosion if battery is incorrectly installed or replaced.

Problem

Door Chime does not sound but LED 
lights up on the Bell push.

Possible Causes

1. Units out of range (max. range 100m).
2. Bell push and Door Chime units are not on same 
digital code.

Suggested Remedy

1. Operate the Door Chime unit within the 
operation range (100m).
2. Re-set the digital code (see: Dip Switch 
Settings).

Door Chime does not sound plus 
no light on Bell push LED.

1. Flat bell push battery.
2. Wrong polarity of battery in Bell push.

1. Change the battery.
2. Re-insert battery as internal marking in right 
polarity.

Door Chime sounds without Bell 
Push being pressed.

A similar Wire Free Door Chime product is 
operating nearby on the same frequency digital 
code.

1. Re-set the digital code (see: Dip Switch 
Settings).

Specification

Wirefree rechargeable chime kit

SX-201

100m

Operating

distance

Door chime unit

CR2032

100m

Wire Free

Batteries 
Included

Batteries

Included

Operating

Distance

Loudness

Open Field

Open Field

80db

No wiring is required for this Wire Free portable Door Chime Kit. When the Bell Push is pressed, it sends a wire free signal to the Door Chime 
unit that activates the chime. As the operating range is up to 100 meters (320ft. approx. – in open field), you can mount or take the Door 
Chime virtually anywhere in the home. However, the transmission range of the wire free signal will be reduced if the signal is transmitted 
through a number of walls or ceilings. Metal and UPVC doors and doorframes will also reduce the operating range.

Bell push unit

A

Bell Push Unit

2 x 3 volt Lithium batteries (CR2032) have already been installed. 
Your Bell Push is ready to use.

Channel Selection – Dip Switch Settings

Before installing the Bell Push you should create your own combination of dip switch settings. 
1. Remove the back of the Bell Push case by pushing in the tab on the bottom with a small, flat screwdriver 

(dia.A). 

2. Inside the Bell Push there is a 4 position dip switch marked 1, 2, 3 & 4. Use a screwdriver to alter the dip switch levers to either “ON” or 
“OFF” positions, which can be altered to achieve a total of sixteen (16) possible digital codes.
3. Select any combination (e.g. 2 up 2 down) 

(dia.B).

  

Do not refit the front cover of the Bell Push just yet.

Installation Guide

Important: Mounting the Bell Push unit on UPVC doors, doorframes or a metal surface will reduce the broadcasting range and may cause 
intermitance. 
Using the two holes on the back of Bell Push as a template (you will need to pierce the holes), mark the fixing position for the unit. If fixing into 
a solid wall drill 6mm holes, fit wall plugs and secure the Bell Push unit with the 2 x 16mm screws provided. If fixing into timber, use a small 
bradawl to make a pilot hole and fix directly with 2 x 16mm screws provided 

(dia.C).

R

&

TTE

approved

C H Byron (Electrical) Ltd

www.chbyron.com
e-mail: support@chbyron.com

 U.K.

HELPLINE

0845-2301231

Bell push unit

Low battery
indicator

Flashing
light

Rechargeable
base

B

C

Type R2 Device - device where the 

T

T
sound output is created by the 
initial operation of the control and 
where the period of sound output 
continues for designed duration 
irrespective of condition of the 
control.

A. Push Button unit
Power
Consumption

: 2 x 3 volt Lithium battery (CR2032 - included)

r

: 7.0mA - ON

 0.003mA - OFF

B. Door Chime unit
Power
Consumption

: 3 x 1.5 volt Ni-Mh batteries (included)
: 200mA - ON

0.3mA - Stand By

C. Charger Unit
Power

Operating Temperature

T

T

Operating Distance
Selectable Tone

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T

Selectable Digital Code

: A/C-D/C 9 volt 300mA adaptor (Byron model SX-36 - included)

: -10

0

0 C to +40

0

0 C

: 100 metres (320 feet approx.) in open field
: Total eight (8) tones available

T

T

: Total sixteen (16) possible digital codes

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T

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