Radon is a major problem in middle Tennessee (Nashville area) as well as much of the USA. I run three different Airthings monitors Airthings to keep track. The built in Airthings integration is pretty good but insists on using EU units and not USA-typical units (PCI/L). I’ve applied custom sensors to it, along with a custom dashboard. For extra fun, I’ve developed an ESP32 with 4 integrated relays that lights up a stoplight hanging my office that changes the stop light color based on radon levels and changes.
Configuration YAML
template
- sensor:
- name: "Current Radon (US) - Airthings Base"
unique_id: radon_current_us_base
unit_of_measurement: "pCi/L"
state_class: measurement
icon: mdi:radioactive
state: "{{ (states('sensor.at_base_radon') | float / 37) | round(2) }}"
- sensor:
- name: "Current Radon (US) - Airthings 1st Floor"
unique_id: radon_current_us_1st
unit_of_measurement: "pCi/L"
state_class: measurement
icon: mdi:radioactive
state: "{{ (states('sensor.at_1st_radon') | float / 37) | round(2) }}"
- sensor:
- name: "Current Radon (US) - Airthings 2nd Floor"
unique_id: radon_current_us_2nd
unit_of_measurement: "pCi/L"
state_class: measurement
icon: mdi:radioactive
state: "{{ (states('sensor.at_2nd_radon') | float / 37) | round(2) }}"
- sensor:
- name: "Radon Status Text"
unique_id: radon_text_level_foo
icon: mdi:radioactive
state: >-
{% if states('sensor.at_base_radon') | float < 100 %}
RADON OK
{% elif states('sensor.at_base_radon') | float < 150 %}
RADON ALERT
{% else %}
RADON DANGER
{% endif %}
