MQ7 – Carbon Monoxide Gas Sensor Module

The module is based on a touch-sensing IC (TTP223B) capacitive touch switch module. In the normal state, the module output low, low power consumption. When a finger touches the corresponding position, the module output high, if not touched for 12 seconds, switch to low-power mode. Job type: the initial state is low, high touch, do not touch is low ( similar touch of a button feature ). A module can be installed in such as surface plastic, the glass of non-metallic materials

In addition to the thin paper ( non-metallic ) covering the surface of the module, as long as the correct location of the touch, you can make hidden in the walls, desktops and other parts of buttons.