MQ131 Ozone Gas Sensor

Detects ozone, which matters in two situations: verifying that an ozone generator used for water or air treatment is actually producing, and monitoring that ozone levels in an occupied space stay safe, since ozone is harmful to breathe at concentrations well below what most people expect. Provides analogue and adjustable digital outputs. Requires the usual MQ warm-up period and gives relative rather than calibrated readings. Detects ozone, useful for treatment system verification; Analogue output plus adjustable digital threshold; Also responds to chlorine and nitrogen oxides; Stable long-term response