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₱73.39
MQ-7 Detection Smoke Methane Liquefied Gas Sensor Module for Arduino Starter DIY
Sold by Lihuakeji
1 sold
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From ₱40.00
Est. delivery by Apr 22 - Apr 26
Lihuakeji
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Ships within 2 days
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Product description
Features:
brand new and high quality
It adopts double-sided board design, with power indication and TTL signal output indication.
It has DO switch signal (TTL) output and AO analog signal output.
TTL output effective signal is low level. (When the output voltage is low, the signal light is on, which can be directly connected to the microcontroller or relay module).
Analog output voltage, the higher the concentration, the higher the voltage.
It has good sensitivity for carbon monoxide detection.
There are four screw holes for easy positioning.
It has a long service life and reliable stability.
Fast response recovery.
Specifications:
Testing gas: Carbon Monoxide
Detection of concentration: 10-1000ppmCO
Loop voltage: 10VDC
Heater voltage: 5V±0.2V ACorDC(high), 1.5V±0.1V ACorDC(low)
Load resistance: adjustable
Heating resistor: 31±3(indoor temperature)
Heating dissipation: 350mW
Sensitive part surface resistance: 2K-20K
Sensitivity: Rs(in air)/Rs(100ppmCO)5
Concentration gradient: 0.6
Temperature, humidity: 20±2, 65%±5%RH
Standard test circuit: Vc: 5v ±0.1v, Vh(high): 5v ±0.1v, Vh(low): 1.5v ±0.1v
Note:
Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
Package includes:
1 x MQ7 Sensor Module
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