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Candeo Zigbee Dimmer module 

C203 and C204

C203

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C203

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C203

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C203

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C203

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C203

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C203

C204

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C204

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C204

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C204

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C204

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C204

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C204

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C204

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C204

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C204

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C204

Minimum Brightness 

button

Reset button

•  Zigbee 3.0
•  Compatible with Philips Hue, Smartthings, Hubitat, Home Assistant plus others
•  Compatible with Alexa and Google Assistant if your zigbee hub supports it
•  Works with multi-way physical switches, when used with retractive switches
•  Minimum brightness can be set
•  Supports resistive and capacitive loads
•  Trailing Edge dimming
•  Suitable for 10-250W LED and 10W-400W for Incandescent/Halogen lamps
•  Module can be paired directly to a Touchlink remote without a hub or bridge
•  Supports Find and Bind mode for Zigbee remotes
•  C204 can be wired in a 2-wire system (no neutral); C203 requires neutral

Features

Specifications

Input Voltage

100V-240V

Power Load

10-200VA LED @ 220V

10-400W Halogen @ 220V

Minimum load per lamp

5W with C204; 3W with C203

Minimum load per circuit

10W with C204; 3W with C203

Dimmer Control Mode

AC Phase Cut

Dimensions

45.5mm x 45mm x 20mm

Please read all of the instructions prior to installation 

Safety Warnings

Installation

• 

Turn Off Mains Power before installing the device

•  Do not expose the device to moisture
•  Do not open the case of the dimmer

1. 

Turn off the power.

i.   To avoid electrical shock and/or equipment damage, disconnect electrical 

power at the main fuse or circuit breaker before installation and maintenance
ii. 

Be aware that even if the circuit breaker is off, some voltage may remain 

in the wires — before proceeding with the installation, be sure no voltage is 

present in the wiring.
iii.  Take extra precautions to avoid accidentally turning the device on during 

installation.

2.  Connect the device according to the diagrams shown below for either 

a 2-wire system (C204 only) or 3-wire system (C203 or C204).

C203

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C203

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C203

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C203

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C203

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C203

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C203

C203 - wiring

C204 - wiring

C204

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C204

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C204

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C204

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C204

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C204

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C204

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C204

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C204

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C204

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C204

•  Bypass is optional but recommended 

for no-neutral wiring

Basic no-neutral wiring

Basic wiring with neutral wire

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C204

C203

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C203

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C203

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C203

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C203

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C203

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C203

C203

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C203

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C203

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C203

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C203

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C203

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C203

Notes for the wiring diagrams:

L - terminal for Live lead
N - terminal for neutral lead
Out - output terminal to light
+A1 - terminal for push switch
+A2 - terminal for grounding to the 

switch connected to the dimmer.

Basic set up without retractive switches

Wiring with retractive switches

Notes for the wiring diagrams:

L - terminal for Live lead

N - terminal for neutral lead

Out - output terminal to light

S1 - terminal for push switch

COM - terminal for grounding to the 

switch connected to the dimmer.

Multi-switch wiring

1.  The C203 and C204 modules can be physically activated using 

either a single push/retractive switch, or multiple switches in a multi-way 

configuration.

i. 

Pressing once toggles the lights on/off; and holding the switch activates 

dimming.
ii.  Toggle/rocker switches are not supported.

2.  (C204 only) Using a LED bypass on no-neutral wiring systems is 

optional but recommended, as it:

i. 

will prevent flickering at low levels, and prevent low level glowing when 

switched off. 

ii.  reduces the minimum load required by the dimmer for optimal operation.

Notes

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