On Thursday, 28 November 2019 22:16:39 UTC, T i m wrote:
On Thu, 28 Nov 2019 20:40:15 +0000, alan_m
wrote:

On 28/11/2019 19:46, Lee Nowell wrote:
That sounds interesting so the module is in the bell box itself? Do you have the make / model of the gadget by any chance? Assume there is a "permanent" live feed to the bell box?


It was fitted very many years ago and an early version similar to....
https://www.adventcontrols.co.uk/pro...burglar-alarms

It was a credit card size board that I fitted myself to the alarm box.
The alarm box was fully wired to the alarm panel which supplied power
(the bell box has rechargeable batteries maintained by this power) The
GSM card has "trigger" inputs connected to the signals that will set the
bell/stobe off and/or monitoring the power to the bell box.

https://cdn.shopify.com/s/files/1/11..._Dialler.pdf?5


I'm about to put something similar together using a ESP32 SIM800L:

https://randomnerdtutorials.com/esp3...-messages-sms/

Cheers, T i m

Hi Tim,

You inspired me to do a little Googling on the ESP front. Not sure if you have seen this.....

https://github.com/konnected-io/konnected-security

It is ESP82660 based and they are porting to ESP32 but seems like this port will not be open source. They also sell kits but are US based...

https://konnected.io/

If you find out anything interesting or have a good path to explore, I might be interested in collaborating.

thanks

Lee.