<![CDATA[Comfort Automation/ Security System Forums - Expansion Modules]]> https://www.comfortforums.com/ Sat, 22 Aug 2026 12:21:27 +0000 MyBB <![CDATA[LEM01 pcb - fitting on top of master CPU or slave pcb]]> https://www.comfortforums.com/thread-5877.html Thu, 11 Jun 2026 05:30:58 -0400 Home]]> https://www.comfortforums.com/thread-5877.html
Firstly if I try to fit the LEM01 on op of the master slave then there are NOT 4 fixing holes (i can only match 2 on one side).

Secondly if I fit the OP01 pcb to the base SEP pcb then there is no space at all for the LEM01.

Would it not be best to supply the LEM01 with a longer ribbon cable and say it does not fit on top of the master or slave !]]>
Firstly if I try to fit the LEM01 on op of the master slave then there are NOT 4 fixing holes (i can only match 2 on one side).

Secondly if I fit the OP01 pcb to the base SEP pcb then there is no space at all for the LEM01.

Would it not be best to supply the LEM01 with a longer ribbon cable and say it does not fit on top of the master or slave !]]> <![CDATA[OPO3 and OPO3B what is the difference]]> https://www.comfortforums.com/thread-5876.html Thu, 11 Jun 2026 05:24:42 -0400 Home]]> https://www.comfortforums.com/thread-5876.html
Are they totally interchangeable ?]]>
Are they totally interchangeable ?]]> <![CDATA[comms Problem SEM01]]> https://www.comfortforums.com/thread-5621.html Thu, 27 Mar 2025 00:59:24 -0400 ]]> https://www.comfortforums.com/thread-5621.html <![CDATA[Wanted - LEM02-M2 or LEM03-M2 (to expand CM9000)]]> https://www.comfortforums.com/thread-5482.html Sat, 24 Feb 2024 08:21:14 -0500 ]]> https://www.comfortforums.com/thread-5482.html I\'d also consider a LEM01-M2 despite not really needing the outputs. If you have any of those you\'d be willing to let go of then please message me.]]> I\'d also consider a LEM01-M2 despite not really needing the outputs. If you have any of those you\'d be willing to let go of then please message me.]]> <![CDATA[LEM01-M2 on SEM01C?]]> https://www.comfortforums.com/thread-5430.html Thu, 18 May 2023 17:22:10 -0400 ]]> https://www.comfortforums.com/thread-5430.html
Is the SEM01-M2 still available? If not, will the LEM02-M2 work with the SEM01C? Or do I have to replace the SEMs and LEMs and also install the OP03 boards to get the maximum of 16 inputs and 16 outputs for each SEM/LEM pair?
]]>
Is the SEM01-M2 still available? If not, will the LEM02-M2 work with the SEM01C? Or do I have to replace the SEMs and LEMs and also install the OP03 boards to get the maximum of 16 inputs and 16 outputs for each SEM/LEM pair?
]]> <![CDATA[SEP01 - Some simple questions]]> https://www.comfortforums.com/thread-5301.html Tue, 13 Apr 2021 04:03:04 -0400 ]]> https://www.comfortforums.com/thread-5301.html I have an existing Comfort Alarm with all inputs in use and the case is full (2 UCMs etc). I\'m adding a garage and have a few simple questions about the SEP01-M2 expansion.
  1. Are only 2 wires required between the main alarm and the SEP01? If so, is pair from a shielded Cat6 OK?
  2. Can I connect 2 more keypads directly to the SEP01? (I have 4 on the main alarm)
  3. Does the SEP01-M2 pack with smaller enclosure include a battery?
  4. Will the SEP01 set off the alarm bell connected to the main alarm or does it need its own alarm bell?
  5. Is KP04 still a current product? (I use KP06 in the house but KP04 looks like a better match to surface mounting in a garage)
]]> I have an existing Comfort Alarm with all inputs in use and the case is full (2 UCMs etc). I\'m adding a garage and have a few simple questions about the SEP01-M2 expansion.
  1. Are only 2 wires required between the main alarm and the SEP01? If so, is pair from a shielded Cat6 OK?
  2. Can I connect 2 more keypads directly to the SEP01? (I have 4 on the main alarm)
  3. Does the SEP01-M2 pack with smaller enclosure include a battery?
  4. Will the SEP01 set off the alarm bell connected to the main alarm or does it need its own alarm bell?
  5. Is KP04 still a current product? (I use KP06 in the house but KP04 looks like a better match to surface mounting in a garage)
]]> <![CDATA[SEM Confusion]]> https://www.comfortforums.com/thread-5176.html Mon, 11 May 2020 17:15:48 -0400 ]]> https://www.comfortforums.com/thread-5176.html Some posts seem to imply that I cannot add an SEM with an LEM03 in the system, while elsewhere it says it can be installed in the last SEM only - which is correct?If the LEM03 can be used, then I propose moving it to the SEM and installing the spare LEM01 in the CM9000.In that case, can I use the SEM01C, as I won\'t need any more inputs and I would prefer to use the switch-mode PSU.
So, I think I need the SEP01C, which is the case + SEM + PSU. Sorry for being long-winded about this but I don\'t want to order the wrong parts.Thanks.
]]> Some posts seem to imply that I cannot add an SEM with an LEM03 in the system, while elsewhere it says it can be installed in the last SEM only - which is correct?If the LEM03 can be used, then I propose moving it to the SEM and installing the spare LEM01 in the CM9000.In that case, can I use the SEM01C, as I won\'t need any more inputs and I would prefer to use the switch-mode PSU.
So, I think I need the SEP01C, which is the case + SEM + PSU. Sorry for being long-winded about this but I don\'t want to order the wrong parts.Thanks.
]]> <![CDATA[SEM Setup Issues]]> https://www.comfortforums.com/thread-5109.html Wed, 04 Sep 2019 08:30:55 -0400 ]]> https://www.comfortforums.com/thread-5109.html I bought an SEM back in December but have only just got round to setting it up.I\'m not having much luck and wanted to ask for help.
I\'ve attached a photo of the SEM to this post, as I think it looks like a main board. Is anyone able to identify it from the photo, or is there anything I can do to identify it?
If it is a main board, is there anything I can do with firmware to retask it, or does it need to be replaced.
Thanks
Ben

.jpg   IMG_2929.JPG (Size: 118.52 KB / Downloads: 16) ]]> I bought an SEM back in December but have only just got round to setting it up.I\'m not having much luck and wanted to ask for help.
I\'ve attached a photo of the SEM to this post, as I think it looks like a main board. Is anyone able to identify it from the photo, or is there anything I can do to identify it?
If it is a main board, is there anything I can do with firmware to retask it, or does it need to be replaced.
Thanks
Ben

.jpg   IMG_2929.JPG (Size: 118.52 KB / Downloads: 16) ]]> <![CDATA[Local Expansion Modules - Zone Numbering]]> https://www.comfortforums.com/thread-5096.html Sun, 04 Aug 2019 03:11:12 -0400 ]]> https://www.comfortforums.com/thread-5096.html
LEM01B with 8 inputs and 8 Outputs


LEM01 Inputs and Outputs are numbered as follows
  • 9 to 16 when connected to Comfort
  • 25 to 32 when connected to Slave #1
  • 41 to 48 when connected to Slave #2
  • 57 to 64 when connected to Slave #3
LEM02B with 8 Inputs, 0 Outputs

LEM02B is mounted direct onto the CM9001 PCB


LEM02 Inputs  are numbered as follows
  • 9 to 16 when connected to Comfort
  • 25 to 32 when connected to Slave #1
  • 41 to 48 when connected to Slave #2
  • 57 to 64 when connected to Slave #3
LEM03 with 16 Inputs 0 Ouptuts

LEM03 Inputs  are numbered as follows
  • 9 to 24 when connected to Comfort, and no Slaves connected
  • 25 to 40 when connected to SEM #1, and no Slaves at a higher ID connected
  • 41 to 56 when connected to SEM #2, and no Slaves at a higher ID connected
  • 57 to 72 when connected to SEM #3, and no Slaves at a higher ID connected
  • 73 to 88 when connected to SEM #4, and no Slaves at a higher ID connected

If an LEM03 is connected to Comfort, Slaves cannot be connected, hence a Comfort + SEM03 is limited to 24 Inputs and 8 outputs

From SEM 7.118 firmware ionwards, LEM03 can be connected to the SEM with the higest ID in the system. Only 1 LEM03 is alllowed per system
Installation Instructions for the LEMs are in the Comfort Intsllation Manual which can be downloaded from the Cytech website
https://www.cytech.biz/installation_manual.html

Seer http://www.comfortforums.com/forum140/5092.html for more info on Local expansion Modules for CM9001
]]>
LEM01B with 8 inputs and 8 Outputs


LEM01 Inputs and Outputs are numbered as follows
  • 9 to 16 when connected to Comfort
  • 25 to 32 when connected to Slave #1
  • 41 to 48 when connected to Slave #2
  • 57 to 64 when connected to Slave #3
LEM02B with 8 Inputs, 0 Outputs

LEM02B is mounted direct onto the CM9001 PCB


LEM02 Inputs  are numbered as follows
  • 9 to 16 when connected to Comfort
  • 25 to 32 when connected to Slave #1
  • 41 to 48 when connected to Slave #2
  • 57 to 64 when connected to Slave #3
LEM03 with 16 Inputs 0 Ouptuts

LEM03 Inputs  are numbered as follows
  • 9 to 24 when connected to Comfort, and no Slaves connected
  • 25 to 40 when connected to SEM #1, and no Slaves at a higher ID connected
  • 41 to 56 when connected to SEM #2, and no Slaves at a higher ID connected
  • 57 to 72 when connected to SEM #3, and no Slaves at a higher ID connected
  • 73 to 88 when connected to SEM #4, and no Slaves at a higher ID connected

If an LEM03 is connected to Comfort, Slaves cannot be connected, hence a Comfort + SEM03 is limited to 24 Inputs and 8 outputs

From SEM 7.118 firmware ionwards, LEM03 can be connected to the SEM with the higest ID in the system. Only 1 LEM03 is alllowed per system
Installation Instructions for the LEMs are in the Comfort Intsllation Manual which can be downloaded from the Cytech website
https://www.cytech.biz/installation_manual.html

Seer http://www.comfortforums.com/forum140/5092.html for more info on Local expansion Modules for CM9001
]]> <![CDATA[Slave Expansion Module for CM9001]]> https://www.comfortforums.com/thread-5094.html Sun, 04 Aug 2019 02:47:30 -0400 ]]> https://www.comfortforums.com/thread-5094.html




The  Slave Expansion Module allows Comfort to be expanded beyond 16 Inputs and 16 Outputs. Each SEM01C/SEP01C contains 8 Inputs and 0 outputs, The  SEM01C/SEP01C which can be expanded by connecting LEM01 (8 inputs, 8 outputs) or LEM02B (8 inputs), or  LEM03 (16 Inputs). 8 (Open-collector) outputs can be added to SEM01C/SEP01C by plugging in the OP03 Output Submodule. SEM01C is the PCB only with TT001-0022 DC Power Supply, and SEP01C is SEM01C with the EN01 metal enclosure. SEM01C will refer to both SEM01C and SEP01C for functionality description.

Specifications - SEP01C/SEM01C
Zone Inputs
  • 8 programmable zones  expandable to 16  with Local Expansion Module  (LEM01, LEM02) or to 24 with LEM03B. LEM03 can only be added to the last Slave ID in the system
  • Each zone configurable for 0 or 2 end-of-line resistors by software setting (no shunts needed)
  • Up to 32 predefined Zone types to simplify zone configuration
  • Surge/Over voltage protection for each Input
Outputs
  • SEM01C does not include Outputs. OP03 must be plugged in (to OP03 header) to give 8 open-collector outputs (see OP03 Section below)
Power Supply
  • TT01-0022 Switched Mode Power Supply Input 90 to 260 VAC, Output 15VDC, 1.8 Amps
  • Built-in regulated 13.8V Output voltage supply and battery charging circuit. Supplies 1A DC max to 12V, S12V  and outputs combined. independent of the main Comfort panel. This allows the 12V power in the whole system to be distributed between the Comfort and Slave power supplies. Each SEM01 requires its own 12V 7 AH back-up battery.
  • SEM01 Quiescent current 100 mA max, 50 mA typical.
Auxiliary Supply Outputs
  • 12V unswitched supply
  • S12V switchable supply (programmable for reset operation eg for Smoke detector reset)
  • Note: Both 12V and S12V  auxiliary supplies and 8 Outputs have a combined continuous current limit of 1A, protected by  common resettable fuse  of 1.3A
System Supervision
  • Individual Zone tamper (open-circuit or short-wiring)  with 2 end of line (EOL) resistors
  • Dedicated 24 hour Tamper input
Input/Output Expansion
Each Slave Expansion Module can be expanded using one of the Local Expansion Modules
  • LEM01B - Local Expansion Module 8+8 (8 zones, 8 outputs)
  • LEM02B - Local Expansion Module 8+0 (8 zones, 0 outputs), plug in to J5 connector.
  • LEM03 – Local Expansion Module 16+0 (16 inputs, 0 outputs)
  • Each Slave can support a total of 16 inputs and 16 outputs (or 24 Inputs, 8 outputs with LEM03). 5 SEMs can be installed in a Comfort System, giving a system capacity of 96 inputs and outputs. If LEM03 is connected to a SEM, then SEMs with a higher ID cannot be connected. Eg if SEM01 ID 1 has an LEM03, then SEMs 2,3,4,5 cannot be added to the system
Size
  • SEM01C: 230 x 130 mm.
Alarm Outputs
  • Siren (12V) Output
  • Speaker output for Internal speaker 8 ohm to 32 Ohms
  • Strobe (12V) Output


]]>




The  Slave Expansion Module allows Comfort to be expanded beyond 16 Inputs and 16 Outputs. Each SEM01C/SEP01C contains 8 Inputs and 0 outputs, The  SEM01C/SEP01C which can be expanded by connecting LEM01 (8 inputs, 8 outputs) or LEM02B (8 inputs), or  LEM03 (16 Inputs). 8 (Open-collector) outputs can be added to SEM01C/SEP01C by plugging in the OP03 Output Submodule. SEM01C is the PCB only with TT001-0022 DC Power Supply, and SEP01C is SEM01C with the EN01 metal enclosure. SEM01C will refer to both SEM01C and SEP01C for functionality description.

Specifications - SEP01C/SEM01C
Zone Inputs
  • 8 programmable zones  expandable to 16  with Local Expansion Module  (LEM01, LEM02) or to 24 with LEM03B. LEM03 can only be added to the last Slave ID in the system
  • Each zone configurable for 0 or 2 end-of-line resistors by software setting (no shunts needed)
  • Up to 32 predefined Zone types to simplify zone configuration
  • Surge/Over voltage protection for each Input
Outputs
  • SEM01C does not include Outputs. OP03 must be plugged in (to OP03 header) to give 8 open-collector outputs (see OP03 Section below)
Power Supply
  • TT01-0022 Switched Mode Power Supply Input 90 to 260 VAC, Output 15VDC, 1.8 Amps
  • Built-in regulated 13.8V Output voltage supply and battery charging circuit. Supplies 1A DC max to 12V, S12V  and outputs combined. independent of the main Comfort panel. This allows the 12V power in the whole system to be distributed between the Comfort and Slave power supplies. Each SEM01 requires its own 12V 7 AH back-up battery.
  • SEM01 Quiescent current 100 mA max, 50 mA typical.
Auxiliary Supply Outputs
  • 12V unswitched supply
  • S12V switchable supply (programmable for reset operation eg for Smoke detector reset)
  • Note: Both 12V and S12V  auxiliary supplies and 8 Outputs have a combined continuous current limit of 1A, protected by  common resettable fuse  of 1.3A
System Supervision
  • Individual Zone tamper (open-circuit or short-wiring)  with 2 end of line (EOL) resistors
  • Dedicated 24 hour Tamper input
Input/Output Expansion
Each Slave Expansion Module can be expanded using one of the Local Expansion Modules
  • LEM01B - Local Expansion Module 8+8 (8 zones, 8 outputs)
  • LEM02B - Local Expansion Module 8+0 (8 zones, 0 outputs), plug in to J5 connector.
  • LEM03 – Local Expansion Module 16+0 (16 inputs, 0 outputs)
  • Each Slave can support a total of 16 inputs and 16 outputs (or 24 Inputs, 8 outputs with LEM03). 5 SEMs can be installed in a Comfort System, giving a system capacity of 96 inputs and outputs. If LEM03 is connected to a SEM, then SEMs with a higher ID cannot be connected. Eg if SEM01 ID 1 has an LEM03, then SEMs 2,3,4,5 cannot be added to the system
Size
  • SEM01C: 230 x 130 mm.
Alarm Outputs
  • Siren (12V) Output
  • Speaker output for Internal speaker 8 ohm to 32 Ohms
  • Strobe (12V) Output


]]> <![CDATA[Lem03-M2 and CM9001]]> https://www.comfortforums.com/thread-4882.html Tue, 17 Apr 2018 21:58:15 -0400 ]]> https://www.comfortforums.com/thread-4882.html Quote:You have the following description in the list price for the Lem03-M2: Local Expansion Module 16 Inputs 0 Outputs. Only 1 can be connected to CM9000 or SEM. If LEM03 is connected to CM9000 or SEM, higher ID SEMs cannot be connected What do you mean by it can be connected to SEM ? Does this mean that one can have the following topology ?
1. CM9001 ULT
2. Lem02-M2
3. Sem02-M2
4. Lem02-M2
5. Sem02-M2
6. Lem03-M2 ?]]> Quote:You have the following description in the list price for the Lem03-M2: Local Expansion Module 16 Inputs 0 Outputs. Only 1 can be connected to CM9000 or SEM. If LEM03 is connected to CM9000 or SEM, higher ID SEMs cannot be connected What do you mean by it can be connected to SEM ? Does this mean that one can have the following topology ?
1. CM9001 ULT
2. Lem02-M2
3. Sem02-M2
4. Lem02-M2
5. Sem02-M2
6. Lem03-M2 ?]]> <![CDATA[Slave expansion Module 01 + 02]]> https://www.comfortforums.com/thread-4868.html Sun, 11 Mar 2018 18:39:27 -0400 ]]> https://www.comfortforums.com/thread-4868.html
Digital
NO
50ms

So far I have had to move the pirs to Comfort II ULTRA Control Panel for them to work and they also work on the SEM02 in the Ultra panel, This is the only workaround that actually works this is the first time I have tried to connect these PIRs to the SEM01 panel I did recently upgrade the firmware but cannot be sure if this made any difference as I did not have them connected up to teh SEM previously also because I am not currently installing a panel for anyone at the moment I cant test to see if it is a hardware issue.
]]>
Digital
NO
50ms

So far I have had to move the pirs to Comfort II ULTRA Control Panel for them to work and they also work on the SEM02 in the Ultra panel, This is the only workaround that actually works this is the first time I have tried to connect these PIRs to the SEM01 panel I did recently upgrade the firmware but cannot be sure if this made any difference as I did not have them connected up to teh SEM previously also because I am not currently installing a panel for anyone at the moment I cant test to see if it is a hardware issue.
]]> <![CDATA[Automatic Detection of LEM03 in Comfort]]> https://www.comfortforums.com/thread-4679.html Sun, 16 Apr 2017 08:17:48 -0400 ]]> https://www.comfortforums.com/thread-4679.html http://www.comfortforums.com/forum79/4673.html

The checkbox  in Comfigurator > Configuration > Modules and Settings > LEM03 (24 Zone) can be ignored. After reading from Comfort this setting will show if LEM03 is connected or not, so it will be a Read Field. Writing into the LEM03  checkbox has no effect. The LEM03 state can only be seen after reading from Comfort




.jpg   lem03Box.JPG (Size: 63.71 KB / Downloads: 70) ]]> http://www.comfortforums.com/forum79/4673.html

The checkbox  in Comfigurator > Configuration > Modules and Settings > LEM03 (24 Zone) can be ignored. After reading from Comfort this setting will show if LEM03 is connected or not, so it will be a Read Field. Writing into the LEM03  checkbox has no effect. The LEM03 state can only be seen after reading from Comfort




.jpg   lem03Box.JPG (Size: 63.71 KB / Downloads: 70) ]]> <![CDATA[SEM Firmware Versions]]> https://www.comfortforums.com/thread-4676.html Fri, 14 Apr 2017 06:00:55 -0400 ]]> https://www.comfortforums.com/thread-4676.html http://www.comfortforums.com/forum78/ for SEM Firmware versions
]]> http://www.comfortforums.com/forum78/ for SEM Firmware versions
]]> <![CDATA[4th SEP, zones show as virtual inputs.]]> https://www.comfortforums.com/thread-4575.html Wed, 07 Dec 2016 19:53:05 -0500 ]]> https://www.comfortforums.com/thread-4575.html Strangely the first 5 zones of SEP5 (81 through 85) also show as virtual as do the last 2 (95 and 96) although that makes no odds as I\'m unlikely to add a 5th SEP.
I have a Velbus UCM installed but not connected to anything - this is for a future X10 replacement project. 
No KNX or Cbus although I did add phantom UCMs at one point just to have a look at the possibilities but they have been deleted long ago. If I re-add them I can\'t see any mappings that would force those zones to virtual.
How can I get those zones back to normal?]]> Strangely the first 5 zones of SEP5 (81 through 85) also show as virtual as do the last 2 (95 and 96) although that makes no odds as I\'m unlikely to add a 5th SEP.
I have a Velbus UCM installed but not connected to anything - this is for a future X10 replacement project. 
No KNX or Cbus although I did add phantom UCMs at one point just to have a look at the possibilities but they have been deleted long ago. If I re-add them I can\'t see any mappings that would force those zones to virtual.
How can I get those zones back to normal?]]>