This part is a kind of semiconductor called MQ6.
Function of this product has GAS SENSOR.
Manufacturers : HANWEI
Image and pinout :
Some of the text within the PDF file :
HANWEI SENSORS MQ-6 www.hwsensor.com TECHNICAL DATA MQ-6 GAS SENSOR FEATURES * High sensitivity to LPG, iso-butane, propane * Small sensitivity to alcohol, smoke. * Fast response . * Stable and long life * Simple drive circuit APPLICATION They are used in gas leakage detecting equipments in family and industry, are suitable for detecting of LPG, iso-butane, propane, LNG, avoid the noise of alcohol and cooking fumes and cigarette smoke. SPECIFICATIONS A. Standard work condition Symbol Vc VH PL RH PH Symbol Tao Tas RH O2 Parameter name Circuit voltage Heating voltage Load resistance Heater resistance Heating consumption Parameter name Using Tem Storage Tem Related humidity Oxygen concentration Technical condition 5V±0.1 5V±0.1 20KΩ 33Ω±5% less than 750mw Techn [ ... ]