Galaxy G2-20 with LCE-01 Ethernet Module

17 May 2019
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United Kingdom

I have a Galaxy G2-20 and an LCE-01-4 ethernet module to make use of ethernet functionality with an iPhone. Before connecting it up I wanted to check a few things.

Enclosed is a picture of my Galaxy G2-20. It has a C020-01-C PCB with a Mk7 keypad and V2 wireless receiver connected. Currently the keypad and V2 wireless receiver wires are joined and are connected to the PCB as follows

2 Black leads (-)
2 Red leads (+)
2 Green leads (A)
2 White leads (B)

My questions are as follows:

Question 1

From what I can see the panel does not have a RS485 bus header. Is this correct?

Question 2

Assuming there is no RS485 bus header I was going to connect the ethernet module using flying leads
on the panel screw terminals. The ethernet momdule has a Red (+12V), Black (0V), White (A) and Yellow (B) leads.
Am I correct in connecting the leads so that there are now three leads joined and connected as follows?

2 Black leads (-) + Black (0V)
2 Red leads (+) + Red (+12V)
2 Green leads (A) + White (A)
2 White leads (B) + Yellow (B)

Question 3

In the image of the G2-20 PCB there appears to be two 12V Auxilliary outputs. One is currently being used for the keypad and wireless receiver.
What is the second one for? Can I connect the ethernet Black (OV) to the other auxilliary output (-), ethernet Red (12V) to the other auxilliary output (+) instead?
Or is it better to join the power wires to the existing ones as suggested in Question 2.

Question 4

In the image of the G2-20 PCB there is a 2-way header RS485 termination. What is this for?

Best regards



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1. Correct, no header on the G2. Wire the flying lead into the panel terminals.

2. Yes, no need to daisy chain as the flying lead is so short.

3. Just extra screw terminals, the copper connects on the PCB.

4. This is for termination to stop reflection of signals on the rs485 bus. The bus is quite resilient to noise, so for domestic short runs of less than 50m, there's no need to worry about reflection or noise on the bus. Just leave the jumper on as default.
Thank you GalaxyGuy. You are a fount of knowledge.

1. & 2. All seems straightforward. Thanks for confirming the connections.

3. For my information when would this other - + connection be used? For example when using a zone expander?

4. Ok. Not experiencing any issues. From my pic it looks like the jumper has been removed as the pins are visible. Should I just leave it as it is?
The terminals are for any auxilliary that needs 12v power. RIO's, sensors etc. One set of terminals would get crowded after a few devices are connected.

Just leave without the jumper. It will run fine.
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Thank you for providing more colour on those points GalaxyGuy.

Fingers crossed configuring the LCE-01 should run smoothly from here.

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