ITEM NAME:MQ-4 DC5V Smoke Methane Propane Hydrogen Gas Sensor Detector Module for Ard C9F9 MQ-4 DC5V Smoke Methane Propane Hydrogen Gas Sensor Detector Module for Ard C9F9 100% Brand New Dual-way Signal Output, Analog output and TTL level outputHigh sensitivity to LPG, gas, alcohol, hydrogen and more Fast response and recovery Good steadiness and long service life Great for home or factory gas leakage detection Use for Detecting: Combustible gas such as LPG, butane, methane, alcohol, propane, hydrogen, smoke, etc Specification: Main chip:MQ-4 gas sensor module Working Voltage: 5V DC Detecting Range: 300 to 10000ppm TTL output valid signal is low Size32X22X27mm Package include: 1 x MQ-4 Gas sensor module Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
