Honeywell SF340J alternative (for Texecom Premier 24)?

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I have a Texecom Premier 24 system which used to include a Honeywell SF340J 12-24v CO Alarm with Relay carbon monoxide detector. The SF340J endured through two units and four modules. Could be very tedious when the backup PP9 battery ran out or the module expired when it would bleep repeatedly until it was fixed. The built-in sounder was very loud and took a long time to clear after a test. However, it did the job.

The second SF340J has now expired and the product has been discontinued. My alarm company has been unable to identify a compatible replacement product. A sensor without a sounder would be fine as it would trigger the house sounder. The fire sensor appears to be a Texecom Exodus OH which is 12V/4-wire Operation With Alarm Relay: 4W. A multisensor including carbon monoxide (something like a Gent S4-901?) could be an option.

Any suggestions for a current device that is compatible?
 
Had the same issue a few years ago …only thing I could find was….not sure if the 12v one is still available, the 240 one will need mains power but it does have a relay to connect to the alarm
 

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