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5Pcs Mq-2 Smoke Gas Lpg Butane Gas Sensor Tester For Arduino

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4.7 stars, based on 80 reviews
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USD 7.62

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Low-level signal when the output light can be directly connected to the microcontroller or relay module 5

Analog output voltage with the higher concentration of higher voltage 4

Specifications Size 32 x 22 x 27mm Chip LM393, ZYMQ-2 gas sensors Working voltage DC 5V AO output 0.1-0 .3 V relative to pollution the maximum concentration of a voltage of about 4V DO output TTL digital 0 and 1 0.1 and 5V Input voltage DC 5V Power consumption current 150mA Package included 5 x MQ-2 gas sensor module

TTL output valid signal is low

The switching signal having a DO TTL output and analog output AO Special note After the sensor is powered, needs wait about 20S, measured data was stable, heat sensor is a normal phenomenon, because the internal heating wire

Using high-quality dual-panel design, with power indicator and TTL signal output instructions 2

There are four screw holes for easy positioning 3

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