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On-board LM386 Chip
The default available tip is the Chisel one with 25-Watt rating
wireless sensors data acquisition and home automation
Speed Variation Ratio ： 1/64
True Read-While-Write Operation
MQ-9 Gas Sensor Module for Carbon Monoxide, Methane and LPG Audio Amplifier On-board LM386 ChipMQ9 Gas Sensor is a Metal Oxide Semiconductor (MOS) type Gas Sensor of MQ Gas Sensors family involving MQ 2, MQ 4, MQ 3, MQ 135, etc. It is mainly used to detect gases like Carbon Monoxide, Methane, and Propane, etc. This MQ9 Smoke Sensor contains a sensing element, mainly aluminum oxide based ceramic, coated with Tin dioxide (SnO2), enclosed in a stainless steel mesh. Whenever gas comes into contact with the sensing element, the resistivity of the
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