# Sensor.community KIT from NETTIGO with HECA KIT

**URL:** https://forum.sensor.community/t/sensor-community-kit-from-nettigo-with-heca-kit/8435
**Category:** Uncategorized
**Created:** [September 11, 2026, 4:58pm UTC](https://forum.sensor.community/t/sensor-community-kit-from-nettigo-with-heca-kit/8435 "2026-09-11T16:58:01Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![zzzs](https://forum.sensor.community/letter_avatar_proxy/v4/letter/z/e9c0ed/32.png) [@zzzs](https://forum.sensor.community/u/zzzs)
#### Post date: [September 11, 2026, 4:58pm UTC](https://forum.sensor.community/t/sensor-community-kit-from-nettigo-with-heca-kit/8435/1 "2026-09-11T16:58:01Z")

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Hi everyone. I bought a Sensor.community kit from Nettigo, but during the first rain, the PM readings shot through the roof. So, I decided to buy the HECA kit as well. **Am I correct in understanding that I don’t need to connect it to the NodeMCU?** I just need to power the HECA unit and use a 2A power supply? Will the HECA board automatically activate the heating when humidity is high? Thanks for the clarification.

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### Author: ![Groningen\_West](https://forum.sensor.community/letter_avatar_proxy/v4/letter/g/ea666f/32.png) [@Groningen\_West](https://forum.sensor.community/u/Groningen_West)
#### Post date: [September 15, 2026, 3:25pm UTC](https://forum.sensor.community/t/sensor-community-kit-from-nettigo-with-heca-kit/8435/2 "2026-09-15T15:25:32Z")

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I’m not sure, but have you seen this instruction from Nettigo about the HECA: [NAM HECA 0.3.3 - soldering | Nettigo Docs](https://docs.nettigo.pl/en/nam/033/nam-heca-033)

Perhaps that will provide you with an answer. It comes from the [Nettigo Air Monitor | Nettigo Docs](https://docs.nettigo.pl/en/nam)

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### Author: ![mdoubkova](https://forum.sensor.community/letter_avatar_proxy/v4/letter/m/ed8c4c/32.png) [@mdoubkova](https://forum.sensor.community/u/mdoubkova)
#### Post date: [September 28, 2026, 12:28pm UTC](https://forum.sensor.community/t/sensor-community-kit-from-nettigo-with-heca-kit/8435/3 "2026-09-28T12:28:38Z")

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Hey, it would help if you provide the exact name of the sensor you bought and the HECA unit you purchased and how you connected them. I bought this sensor: [https://nettigo.pl/products/nettigo-air-monitor-0-3-zlutowany-kompletny-zlutowany-zestaw-wersja-pro-z-zewnetrzna-antena](https://nettigo.pl/products/nettigo-air-monitor-0-3-zlutowany-kompletny-zlutowany-zestaw-wersja-pro-z-zewnetrzna-antena) and yes the HECA is automatically activated if humidity exceeds 70%.