Keywish Basic Gas Sensor MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 Sensor kit set for Arduino Starter Kit gas detection

Keywish Basic Gas Sensor MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 Sensor kit set for Arduino Starter Kit gas detection

<B>Component list:</B><BR>1 x Project Box <BR>1 x User Manual<BR>1 x MQ-2<BR>1 x MQ-3<BR>1 x MQ-4<BR>1 x MQ-5<BR>1 x MQ-6<BR>1 x MQ-7<BR>1 x MQ-8<BR>1 x MQ-9<BR>1 x MQ-135<BR>1 x 400 Holes Breadboard <BR> 20 x Dupont wire (Female to Male)<BR>2 x 24cm Jumper Wire (Male to Male)<BR>2 x 20cm Jumper Wire (Male to Male)<BR>4 x 16cm Jumper Wire (Male to Male) <BR>22 x Jumper Wire 25cm (Male to Male)<BR><BR> <B>Features:</B>Gas Sensor Detector Module can be used in the gas leakage monitoring device of homes and factories, it's suitable for the detection of liquefied gas, butane, propane, methane, smoke, etc. <BR><B>PRODUCT FEATURES</B><BR>It adopt the high quality dual-panel design with power indication and TTL signal output indication;<BR>With DO switch signal (TTL) output and AO analog signal output;<BR>The output signal of TTL is low. (When the output is low, the signal light can be directly connected with a single chip microcomputer or a relay module);<BR>The voltage value will be higher if the concentration of analog output voltage is higher.<BR>Good sensitivity to liquefied gas, natural gas, city gas and smoke;<BR>There are four screw holes for easy positioning;<BR>Has a long lifetime and reliable stability;<BR>Rapid response and recovery characteristics.<BR><B>ELECTRICAL PROPERTIES</B><BR> Input voltage : DC5V Power consumption ( current ): 150mA;<BR>DO output : TTL digital 0 and 1 ( 0.1 and 5V);<BR>AO output :0.1-0.3 V ( relative to pollution ), the maximum concentration of the voltage is about 4V.<BR> <BR> <B>SPECIAL NOTE</B><BR> After the sensor is powered, it needs around 20 seconds to warm up to make sure the measured date is stable. And the sensor heating is a normal phenomenon, because of the internal electric wire, but it's not normal if it is very hot.