ESP8266 / NodeMCU integrating with Bosch 3000 alarm system

Thread Starter


Joined Sep 29, 2021

I have designed a system to arm/disarm my Bosch 3000 series alarm system and also let me know when the system is armed/disarmed. The information is required on my PC which is running an MQTT broker.

I have used a ESP8266 / NodeMCU chip to relay the info and an optocoupler to isolate the alarm panel from the ESP8266 (and vice versur).

I have attached my schematic below and hoping to get any feedback anyone has on it before I commit to building it.


These are the components I plan on using:

OPTO Coupler:
NodeMCU ESP8266: Shopping&utm_campaign=Google Shopping&utm_medium=cpc&utm_term=1500099&gclid=CjwKCAjw-sqKBhBjEiwAVaQ9aw1y1hd2M-7sEOavJK-al2jj5OM7CrzJhwnQ1H6540E4owbQNJjSjhoC_twQAvD_BwE

Bosch 3000 alarm system: