$257.00
SE
GUOYUGRA GY/VGD-200-O3-G (0-10.00 ppm) ozone Detector
O30-10.00 ppm (optional 20ppm, 50ppm, 100ppm)diffusion
MCU chip and intelligent Sensors technology, the device supports 4-20mA, RS485, switch and other signal output, optional wireless transmission module (such as LORA, 4G, WiFi, etc.) for remote monitoring.

If you don't know how to choose "Gas detector", please consult customer service.