{"product_id":"mq137-nh3-gas-sensor-module-for-research-and-development","title":"MQ137, NH3 Gas Sensor Module for Research and Development","description":"\u003cdiv class=\"title--wrap--NWOaiSp description--title--NMh4UiD\"\u003e\n\u003cdiv class=\"title--text--Otu0bLr\"\u003e\n\u003ch2 class=\"title--title--O6xcB1q\"\u003eDescription:\u003c\/h2\u003e\n\u003cp class=\"title--title--O6xcB1q\"\u003e1: Wide range of applications\u003cbr\u003e2: Wide detection range\u003cbr\u003e3: Fast response (less than 1s)\u003cbr\u003e4: High sensitivity (3%)\u003cbr\u003e5: long stable life\u003cbr\u003e\u003cbr\u003eThe MQ137 module is a sensor board designed to detect NH3 ammonia and other gases. The sensitive material of the MQ137 gas sensor is SnO2, which has low conductivity (high resistance) in clean air. When the target sensitive gas is present, the conductivity of the sensor increases with the gas concentration. The board comes with basic circuitry to change conductivity or voltage resistance and output it to header pins, DO and AO.\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eParameter:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eWide detection range\u003cbr\u003eFast response (less than 1s)\u003cbr\u003eHigh sensitivity (3%)\u003cbr\u003eCircuit voltage: DC5V\u003cbr\u003eStable and long life\u003cbr\u003eWorking voltage is +5V\u003cbr\u003eDetect\/Measure NH3, Ammonia\u003cbr\u003eConcentration: 5-500ppm (ammonia)\u003cbr\u003eHeater resistance (RH): 31Ω±3Ω at room temperature\u003cbr\u003eHeater consumption (PH): ≤900mW\u003cbr\u003eSensing Resistance (Rs): 2KΩ-15KΩ (in 50ppm NH3)\u003cbr\u003eSensitivity (S): Rs(in air)\/Rs(5000ppm CH4)≥5\u003cbr\u003eSlope (α): ≤0.6 (R100ppm\/R50ppm NH3)\u003cbr\u003eAnalog output voltage: 0V～5V\u003cbr\u003eDigital output voltage: 0V or 5V (TTL logic)\u003cbr\u003eWarm-up time: 20 seconds\u003cbr\u003eCan be used as digital or analog sensor\u003cbr\u003eSensitivity of digital outputs can be adjusted using on-board potentiometers\u003cbr\u003eTTL output valid signal is low level. (When the output is low, the signal light is on, which can be directly connected to the microcontroller or relay module)\u003cbr\u003eThe voltage of the analog output, the higher the concentration, the higher the voltage.\u003cbr\u003eWorking humidity: 95%RH (nominal humidity 65%RH)\u003cbr\u003eProduct size (mm): 35(L)*20(W)*28(H)\u003cbr\u003eWeight: 17 grams\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003ePackage Included:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e1* MQ137 gas sensor module\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Electronic Solution","offers":[{"title":"Default Title","offer_id":51295570854052,"sku":"SKU:UPC00708","price":4000.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/5218\/0900\/files\/imgi_59_0dc2b36d6f46eed20e74e46726aac0a6.jpg?v=1775323548","url":"https:\/\/www.electronicsolution.pk\/products\/mq137-nh3-gas-sensor-module-for-research-and-development","provider":"Electronic Solution","version":"1.0","type":"link"}