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Absolutely this Absolutely this. Now I have my proof of concept and know that I am not going mad (YMMV) I will concentrate on the ESP modules and see if I can brute force the serial communication somehow - it may still be that I have built esp-link incorrectly before flashing it to the module...

...and finally success! Raspberry Pi 3B+ running 64bit Bullseye, fully headless (SSH & VNC setup), ser2net installed and CP2102 USB module and we have a rock solid Wi-Fi backdoor connection to the panel on com port 3 along with a Smartcom installed on com port 1 & 2. This also works with the...

Thanks for the links, they are slightly different to what I am trying to do but using similar modules. My problem is/was getting the panel to actually communicate over it's com port with my module(s). I made some incorrect assumptions along the way which I have hopefully overcome and can now...

I was thinking along the same lines and I suspect that Texecom panels may simply not play nicely with the (possibly fake/cloned) CH340 chipset of Arduino based modules. After going back to basics and testing with a CP2102 module, Wintex connected straight away without any issues on Com Port 3...

I've had a chance to setup a full test panel (Elite 64W) this weekend and played around with this project but I just cannot get the ESP8266 module to communicate with the panel at all. I thought I did previously but I think I was mistaken and interpreting the module RX/TX LEDs incorrectly. I...

Yes, and I have had it working BUT when using with a SmartCom plugged in as well, everything breaks! I am sure there is a way around it but I did not want to keep pulling my own panel around and waited for an old premier panel to come up so I can play around on the bench. I have one now so I...

I am still working on this project as time allows and as @sparkymarka said, you can only alter the baud on COM2 which means if you also have a SmartCom installed you are going to need to play around a bit. It would be great if Texecom could enable you to change the baud on ALL COM ports but...

That looks like a Texecom Premier Elite Odyssey 3. As a word of caution for directly switching piezo sounder, I did this on a Deltabell once whilst I was soak testing a fault on a system by simply disconnecting the peizo from the PCB for a couple of days and it killed the PCB in the bell box...

Thanks for the advice. I assume apart from the physical design, from a technology perspective, there is currently not much to choose between Pyronix, Texecom and Optex and they are all good?

Images of the various sensors currently in situ - they are in an unheated warehouse and work OK but are old and throw an occasional false (probably not false but possibly trapped birds) and some have signs of water ingress. Area covered is a long (40m) wide (10m) warehouse, placed every 10m...

They are a bit of a mix and match at present - some replaced along the way but there are Pyronix, Texecom and also unknown ones on the system. I'll come back with some pictures of them tomorrow...

Very old (10 years+) Premier 24 system and with Redcare ending next year a panel upgrade (Premier Elite 24) is required for SmartCom and self monitoring and maintenance. All the current PIR are from the system before the current one and not even EOL so they are due a change. They are currently...

I have been asked to replace some really old PIR in a commercial warehouse. Existing are not even DT but I will replace with DT unless someone suggests otherwise. Nothing special required but what brand/models are people currently using as their go to favourite in 2024?

I found a laptop, installed Wintex, plugged in a USB-COM and read the panel without any issues using Com Port 3. Parking the project until I get hold of an old Premier or Elite panel to do some testing with on Com Port 1 & 2 without anything else installed. I'm always open to ideas if anyone...

The ESP8266 is a bit dated now but still a great piece of kit for IOT - I think mine are 12E but essentially the same module. The COM port on the alarm panel is confirmed 5V TTL logic and does not communicate directly with a PC using RS232 levels, but via a bog standard FTDI/CH340 etc USB TTL...

Thanks, I'll see if I can get John's attention. This is not actually going to spoof a ComIP module, it will spoof a USB-COM cable connected to Com Port 3 and relay the serial data across an IP connection. The principal is extremely simple and straight forward but I need to find out why the...

I appreciate the input on this discussion, after all this is far outside the remit of what normal people do in their spare time and I doubt that most would ever think about Com Ports in their alarm panel, let alone ask about Com Port 3 access! I agree that the introduction of Monitor Mode makes...

UPDATE: After a recent outage I wanted to build a WiFi Backdoor that did not rely on the Texecom broker/proxy service and could be accessed via IP from the local network over WiFi through Wintex whilst also running a SmartCom 4G. I run my panel in Monitor Mode which adds more detailed event...

Yes, thank you Sir! You are an asset to the Forum :)

Thanks @sparkymarka (y) Reverse engineered a JAL-0001 board and attach my crude drawing here in case the information is useful for others. The Zener diode (shunt regulator?) circuit looks like it is designed to reduce noise and stop the RXD input floating with nothing connected to the port...