{"title":"Gravity Calibrated NH3 Ammonia Sensor - I2C/UART","handle":"gravity-nh3-sensor-calibrated-i2c-uart","url":"/products/gravity-nh3-sensor-calibrated-i2c-uart","description":"This calibrated gas sensor measures ammonia concentration in the environment using an electrochemical probe. It supports three output modes — analogue, I2C and UART — so it can slot into a wide range of microcontroller and single-board computer projects.The probe is factory-calibrated for quick setup and is designed for industrial ammonia detection and environmental protection devices. It offers strong anti-interference performance, high stability and high sensitivity, with a service life of more than two years in air.The Gravity signal conversion board is compatible with mainstream controllers including Arduino, ESP32 and Raspberry Pi. It supports 32 modifiable I2C addresses, an integrated temperature compensation algorithm and a threshold alarm function, with sample code available to help you build an ammonia concentration detector quickly.Included are Gravity: NH3 Signal Conversion Board x1, NH3 sensor probe x1 and Gravity - 4pin Cable x1. This sensor is part of DFRobot's calibrated gas sensor series, which uses the same method and data format across multiple gas types.Features:Strong anti-interference abilityHigh stabilityHigh sensitivitySpecifications:Detection Gas: Ammonia (NH3)Detection range: 0~100ppmWorking Voltage: 3.3～5.5V DCWorking Current: ＜5mAOutput Signal: I2C, UART (0~3V), analog voltageWorking Temperature: -20～50℃Working Humidity: 15～90%RH (non-condensing)Storage Temperature: -20～50℃Storage Humidity: 15～90%RH (non-condensing)Lifespan: >2 years (in the air)Adapter Plate Size: 37*32mmCompatibility: Arduino, ESP32, Raspberry pi","vendor":"DFRobot","product_type":"Gas Sensor","in_stock":true,"options":[],"variants":[{"id":15833,"title":"Default Title","sku":"DF-SEN0469","mpn":"SEN0469","price":336.6,"on_sale":false,"in_stock":true,"available_quantity":107}]}