Oxygen Sensor, KE-25/50 Long Life, 5-10 Years, Depending on the Environment

High Resolution Methane Infrared Gas Sensor, 0-100% LEL Methane, Hydrocarbons or 0-100% Vol Methane

Voltage and Digital Output Infrared Gas Sensor for Carbon Dioxide, Range 0-5000ppm up to 0-10% Vol

Ultra Low Power Carbon Dioxide Sensor COZIR-ambient

Capacitive Humidity Sensor, HS1101 HS1101LF

Digital Temperature and Humidity Sensor, HTU21D Pin to Pin Replace SHT21

HTG3513CH Humidity Module Voltage Output Sensor

HM1500/HM1500LF relative humidity sensor, linear analog output

Optomax Basic Series Liquid Level Sensor LLC200A3SH

Analog Voltage Output Humidity and Temperature Sensor Module HTG3535PVBL

Dust Sensor, DSM501A for Air Quality Monitor

Liquid Level Sensors, LLC200D3SH

Capacitive Temperature and Humidity Sensor HTS2230

Liquid Level Sensor, LLE101000

MisIR Low-cost NDIR CO2 Sensor for HVAC

Liquid Level Sensor LLE105000

O2S-FR-T5 Oxygen Sensors, Flange Mounting

Optical Liquid Level Sensors LLC500D3

Oxygen Sensors, Screw Fit Probe O2S-FR-T2-18X

Frequency Output Temperature and Humidity Sensor