2 Pack MQ-4 Gas Sensor - for Air Quality & Safety Monitoring

$4.95

Safe 45%

2 Pack MQ-4 Gas Sensor - for Air Quality & Safety Monitoring

2 Pack MQ-4 Gas Sensor - for Air Quality & Safety Monitoring

$4.95

45% Off

Delivery & Return: Free shipping on all orders over $50

Estimated Delivery: 10-15 days international

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SKU: 46560394

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Description

MQ-4 gas sensor sensitive material used in clean air conductivity is lower tin dioxide (SnO2). When the sensor is present in the environment in which the combustible gas, the sensor's conductivity increases with the concentration of combustible gases in air increases. Using a simple circuit can be converted to the change in conductivity of the gas concentration with the corresponding output signal. MQ-4 gas sensor for high sensitivity.

Shipping & Returns

For all orders exceeding a value of 100USD shipping is offered for free.

Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.

Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.

Features

MQ-4 Gas Sensor

Input Voltage DC5V & Power consumption ( current ) 150mA & DO output TTL digital 0 and 1 ( 0.1 and 5V) & AO output0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V

Special note After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal .

Size 32(L)x20(W)x22(H)mm/1.26"x0.79"x0.76"

Package Include 2PCS MQ-4 Sensor Module

-45% Off