MQ-137 NH3 Gas Sensor Module for Ammonia, Carbon monoxide Detector Module Raspberry Pi4 2-4-8GB Model 4B Ultimate Kit- Case 3A per phase performance with

3A per phase performance with a compact 34mm body length

Always verify your existing pulley's tooth count (16T vs 20T) before ordering to ensure matching step calibration

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degreesC / degreesF Switchable: Toggle between Celsius and Fahrenheit units based on your preference

MQ-137 NH3 Gas Sensor Module for Ammonia, Carbon monoxide Detector Module Raspberry Pi4 2-4-8GB Model 4B Ultimate Kit- Case 3A per phase performance withMQ 137 NH3 Gas Sensor Module for Ammonia & Carbon Monoxide Detection Product Overview The MQ 137 Gas Sensor Module is a high sensitivity semiconductor gas sensor designed for detecting ammonia (NH3) and carbon monoxide (CO) in various applications. This reliable, cost effective solution is ideal for environmental monitoring, industrial safety systems, and DIY electronics projects. Key Features High Sensitivity Detects ammonia concentrations from 10