Horizontal sulfur dioxide (SO2) card with background

Who it’s for

Environmental health officers, air quality managers, and industrial site managers ask “can I monitor SO₂ across many stations in a compact layout where the severity is still instantly visible?” The horizontal background variant combines space efficiency with the full-card color signal.

What it does

A sensor reporting sulfur = 65 µg/m³ displays the reading in a horizontal card whose entire background fills with the severity color: green for Good (0–100 µg/m³), light green for Moderate (100–200 µg/m³), orange for Elevated (200–350 µg/m³), dark orange for High (350–500 µg/m³), and red for Hazardous (above 500 µg/m³).

• Full-card background color makes SO₂ severity readable across a control room without reading the number
• Horizontal layout fits more stations per row on a multi-station air quality dashboard
• Shows one sensor’s reading per widget; tile multiple widgets to monitor all stations at a glance

How to set up

Data keys

Key	Role	Type	Description
sulfur	Main value	Timeseries	Sulfur dioxide concentration in µg/m³; change the key name to match your device’s telemetry key

The widget ships with a simulated function datasource key labeled Sulfur dioxide, so it draws random values until you point the datasource at a device and rename the key.

To point it at your own device: open the dashboard in edit mode, open the widget’s Datasources, pick the entity or entity alias, and replace the function key with the key your device reports.

Value ranges

Range (µg/m³)	Level	Color
0–100	Good	Green
100–200	Moderate	Light Green
200–350	Elevated	Orange
350–500	High	Dark Orange
500+	Hazardous	Red

How to customize

• To change the severity thresholds — edit Icon color ranges and Value color ranges; set the same boundaries in both so the icon and the number always agree.
• To change the background colors — edit the background color for each severity level in the widget settings.
• To rename the units label — change the Units field in the widget settings if your sensor reports in ppm.

Tips

• A row of horizontal background cards, one per monitoring station, lets the duty officer see at a glance which stations are elevated during an industrial incident without scanning individual readings.
• Use consistent severity colors across all air quality widgets.
• For incident response, pair this card with an SO₂ chart card for the affected station so operators can quickly assess both the current level and how long the exceedance has been running.