# Automation HAT Thermostat Control and Alarm Siren

**URL:** <https://forums.pimoroni.com/t/automation-hat-thermostat-control-and-alarm-siren/10596>\
**Category:** Support\
**Created:** [May 30, 2019, 9:59am UTC](https://forums.pimoroni.com/t/automation-hat-thermostat-control-and-alarm-siren/10596 "2019-05-30T09:59:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![damooooooooooh](https://avatars.discourse-cdn.com/v4/letter/d/e56c9b/32.png) [@damooooooooooh](https://forums.pimoroni.com/u/damooooooooooh)\
**Post date:** [May 30, 2019, 9:59am UTC](https://forums.pimoroni.com/t/automation-hat-thermostat-control-and-alarm-siren/10596/1 "2019-05-30T09:59:41Z")

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Hi All,

I’m running Mozilla Webthings Gateway on a Raspberry Pi 3 and have procured an Automation Hat in the hope of retiring my Nest thermostat and Pyronix alarm system.

I want to achieve 2 things with the HAT.

1. Send a call for heat to a gas combi boiler using existing thermostat wiring, I believe a relay on the Automation Hat can do this?
2. Activate a Pyronix Deltabell Siren 9v when the automation platform detects a perceived threat. Can a relay achieve this also?

Thanks in advance!