[Retracted] Environmental Monitoring and Restoration of Ecological Cycle Index System Based on IoT Agriculture

Table 4

Performance indicators of the NO₂ sensor.

Serial number	Parameter	Size	Unit
1	Concentration range	0–20	ppm
2	Output current	150 ± 30	nA
3	Reaction time	<25	s
4	Zero drift	<0.5	PPM
5	Temperature	−20∼+50	°C
6	Pressure range	0.9–1.1	atm