The MPX5010DP is a dual port, integrated silicon pressure sensor in 6 pin SIP package. This piezoresistive transducer is state of the art monolithic silicon pressure sensor designed for wide range of applications. It is ideally suited for microprocessor or microcontroller based system. This transducer combines advanced micromachining techniques, thin-film metallization and bipolar processing to provide an accurate, high level analogue output signal that is proportional to applied pressure. The axial port has been modified to accommodate industrial grade tubing. >On-chip signal conditioned, temperature compensated and calibrated >Differential configuration >5.0% maximum error over 0°C to 85°C >Durable epoxy unibody >Temperature compensated over -40°C to 125°C >Patented silicon shear stress strain gauge >Pressure range from 0KPa to 10KPa >Supply voltage range from 4.75VDC to 5.25VDC >Sensitivity of 450mV/mm >Response time of 1ms

The MQ-135 is a hazardous gas sensor used for air quality control and is suitable for detecting NH3 (Ammonia), NOx, alcohol, Benzene, smoke, CO2, etc.

MQ-136-Hydrogen Sulfide Gas Sensor Module E-869 Dual signal output (analog output and TTL level output) The TTL output effective signal is low. Analog output 0 ~ 5V voltage, the higher the concentration the higher the voltage. Good sensitivity to hydrogen sulfide, liquefied gas, natural gas, city gas, and smoke. with long service life and reliable stability fast response recovery characteristics  

Sensitive material of MQ-2 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration. MQ-2 gas sensor has high sensitity to LPG, Propane and Hydrogen, also could be used to Methane and other combustible steam, it is with low cost and suitable for different application.