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Description
- Main chip: LM393, MQ-7 gas sensor.
- Operating voltage: DC 3-5V.
- with the signal output indication.
- the dual signal output (analog output, and TTL level output).
- TTL output valid signal is low level, can connected to microcontroller directly.
- 0 ~ 5V analog output voltage, the higher concentration the higher voltage.
- with high sensitivity and good selectivity for CO.
- with a long service life and reliable stability.
- rapid response and recovery characteristics.
- size: 36mm*24mm*17mm(L * W * H)
- Application:
For CO gas detect, CO detection range: 10 ~ 1000ppm.
MQ-7 Sensor Specifications:
- Detecting Range: 10 to 1000ppm
- Sensitivity: R in air/R in typical gas≥5
- Response Time:≤150s(70% Response)
- Recovery Time:≤150s(70% Response)
- Heating Resistance:31Ω±3Ω
- Heating Vlotage:5.0V±0.2V/1.5V±0.1V
- Heating Power: about 350mW
- Measuring Voltage:≤24V
- Operating Condition:
Ambient Temperature:-20℃~+55℃ Humidity: ≤95%RH Environment oxygen content: 21% - Storage Condition:
Temperature: -20℃ to +70℃ Humidity: ≤70%RH
Package include:
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Payment |
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Shipping Detail |
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- Other countries, total price below $30 we will ship your item without tracking number. Otherwise, if you need Registered Mail shipping, please add $2.5. Usually all the items will be shipped via Hong Kong Post Airmail or China Post Airmail.
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- Airmail Packets' Delivery Time(reference only):
- USA,Australia,New Zealand,Southeast Asia, East Asia. 7-20 business days.
- EU(France,Spain,Italy,Germany,UK,etc.) ,Canada,10-25 business days.
- Other Countries. 10-30 business days.
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Africa,Ukraine,Brazil,Chile,Argentina,Mexico, etc. 15-35 business days,usually long time.
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Delivery time depends on postal process and other factors,They can get it as fast as 7 days,but it can take as long as 4-7 weeks in some cases.
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Return Policy
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- DOA(Dead On Arrival) or Wrong Item will be offered exchange.
- Refund will be offered if stock is not available
- Defective goods must be returned within 30 days after receiving it for exchange or refund.
- Buyer is responsible for return shipping cost in any situations.
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Contact us |
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