Nitrogen Dioxide Sensor Channel

Channel Category: nitrogen_dioxide

Monitors the concentration of NO₂ in the air, often used in environmental and industrial monitoring.

Required Properties

Property	Data Type	Range	Unit	Permissions
`detected`	`Bool`	`true/false`	-	RO (Read-Only)
`density`	`Float`	`0.0–100,000.0`	µg/m³	RO (Read-Only)
`mode`	`Enum`	`annual/1_hour`	-	RO (Read-Only)

Property Details

`detected`

Indicates whether the sensor detects abnormal levels of nitrogen dioxide:

true: Abnormal NO₂ levels detected.
false: NO₂ levels are within normal limits.

`density`

Reports the current detected nitrogen dioxide (NO₂) concentration:

Measured in micrograms per cubic meter (µg/m³).
Reflects real-time NO₂ levels in the environment.

`mode`

Specifies the type of measurement provided by the sensor:

annual: The sensor measures long-term average NO₂ levels over a year.
1_hour: The sensor measures short-term NO₂ levels as a 1-hour average.

[!Notes]: Either detected or density must be included, depending on the use case. If only density is provided, values exceeding 40 µg/m³ (annual mean) or 200 µg/m³ (1-hour mean) are considered poor air quality per WHO guidelines and will be displayed as a warning

Optional Properties

Property	Data Type	Range	Unit	Permissions
`active`	`Bool`	`true/false`	-	RO (Read-Only)
`fault`	`Uchar`	`0–255`	-	RO (Read-Only)
`tampered`	`Bool`	`true/false`	-	RO (Read-Only)

Property Details

`active`

Indicates the channel’s current working status:

true: The sensor is active and functioning correctly.
false: The sensor is inactive or non-functional.

`fault`

Represents the fault state of the sensor:

0: No fault detected.
Non-zero: A fault has been detected, potentially affecting functionality.

`tampered`

Indicates whether the channel has been tampered with:

true: The channel has been tampered with.
false: The channel is in a normal, non-tampered state.