Horizontal carbon monoxide (CO) card

Who it’s for

Environmental health officers, air quality managers, and smart city operators ask “can I compare CO across several stations without losing the severity colors?” The horizontal layout is designed for dashboards where vertical space is limited and multiple readings must share a narrow column.

What it does

A monitoring station reporting carbon = 3.2 mg/m³ displays the color-coded reading in a wide, low-height card: green for Good (0–5 mg/m³), light green for Moderate (5–10 mg/m³), orange for Elevated (10–25 mg/m³), dark orange for High (25–50 mg/m³), and red for Hazardous (above 50 mg/m³). The horizontal format lets you stack many sensors in a narrow sidebar without scrolling.

• Live CO reading in mg/m³ with color coding across five severity bands
• Compact horizontal layout fits more sensors in a narrow column than a square card
• Shows one sensor’s reading per widget; stack multiple widgets to display a full station network in a single sidebar

How to set up

Data keys

Key	Role	Type	Description
carbon	Main value	Timeseries	Carbon monoxide concentration in mg/m³; change the key name to match your device’s telemetry key

The widget ships with a simulated function datasource key labeled Carbon monoxide, 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	Level	Color
0–5	Good	Green
5–10	Moderate	Light Green
10–25	Elevated	Orange
25–50	High	Dark Orange
50+	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 band colors — edit the color of each range in Icon color ranges and Value color ranges.
• To rename the units label — change the Units field in the widget settings if your sensor reports in ppm instead of mg/m³.

Tips

• Stack horizontal CO cards in a fixed-width sidebar next to a map widget so operators can see which stations are elevated while keeping the map in view.
• Arrange cards in the same geographic order as the stations appear on the map so operators can match a colored card to a location without reading the label.
• For compliance reporting, pair this card with a CO chart card so inspectors see both the current reading and the daily trend without switching views.