1. With signal output indicator light;2. signal output (analog output and TTL level output);3. TTL output effective signal is low level; (the signal light is on when the output is low level, and can be connected to the IO port of the single-chip microcomputer)4. The analog output increases as the concentration increases, the concentration Y is high and the voltage Y is high;5. High sensitivity to ozone gas, (detection concentration range 10PPB-2PPM)Size: 32mm X22mm X27mm length X width X heightMain chip: LM393, -131 gas sensorWorking voltage: DC 5VIt has a long service life and reliable stability of KE;Fast response and recovery characteristics;With mounting holes, convenient for fixed installation;The probe can be plugged and unplugged, which is convenient for testing.Application:Ozone gas detection devices used in homes and atmospheric environments,Material:Plastic, metalcolour:BluePackage Contents:1 x ozone sensor moduleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.