MQ-7 CO2 Gas Detector Sensor Module for Air Quality Monitoring
Couldn't load pickup availability
Have questions about this product? Our team is here to help — just reach out on WhatsApp.
💬 Contact Us on WhatsAppAbout the Product
MQ-7 Carbon Monoxide (CO) Gas Detector Sensor Module | Dual-Panel Air Quality Monitoring Module with 10-1000 ppm CO Detection Range, Analog + TTL Output, 5V DC Operation for Arduino, Raspberry Pi and Embedded Safety Monitoring Systems
Ensure peace of mind with the MQ-7 Carbon Monoxide (CO) Gas Detector Sensor Module — the workhorse module for accurate CO concentration monitoring, safeguarding indoor spaces from this dangerous, odorless gas. Constant surveillance, operating at 5V DC input voltage with a 0.1-5V analog output range, ensures uninterrupted safety. The MQ-7 sensor delivers efficient performance with TTL signal output and clear performance display, offering intuitive use and immediate feedback. The dual-panel design sets new standards for security technology in DIY safety monitoring projects.
Typical Applications
- Indoor CO monitoring — kitchen, garage, basement, near fuel-burning appliances.
- DIY safety alarms — Arduino / Raspberry Pi-based CO detection with custom logic.
- Smart home integration — combined with WiFi / Zigbee for cloud telemetry.
- Industrial CO warning — early-warning indicators in industrial / workshop environments.
- Educational electronics projects — teaching gas sensing, ADC reading, threshold logic.
- Multi-gas air quality monitor — combined with MQ-2 / MQ-135 for comprehensive sensing.
MQ-7 CO Sensor Module Specifications
| Technical Feature | Specification |
|---|---|
| Sensor | MQ-7 metal-oxide CO sensor |
| Dual-Panel Design | Yes (high-quality construction) |
| Input Voltage | 5V DC |
| Output Voltage Range | 0.1 – 5V analog |
| Signal Output | TTL (digital threshold) + Analog |
| Detectable Concentration | 10 – 1000 ppm CO |
| Operating Temperature | Wide range (suitable for typical indoor use) |
| Compatibility | Arduino / Raspberry Pi / STM32 / ESP32 / generic MCU |
| Form Factor | Compact PCB module |
| Condition | Brand New |
FAQ — MQ-7 CO Sensor Module
Q: MQ-7 vs MQ-2 vs MQ-135 — which to choose?
A: MQ-7 is the dedicated CO (carbon monoxide) sensor — the silent indoor air safety threat from fuel-burning appliances. MQ-2 is multi-gas (LPG / methane / smoke). MQ-135 is broader air quality (benzene / alcohol / smoke). For CO-specific safety, use MQ-7. For general indoor air quality dashboards, combine MQ-2 + MQ-7 + MQ-135 for triple coverage.
Q: Does it require burn-in / warm-up?
A: Yes — like all MQ family sensors, MQ-7 needs a 24-hour initial burn-in for best stability. After that, typical warm-up before reading is 1-3 minutes from cold start. The MQ-7 uses a cyclical heater (high temp for 60s, low temp for 90s) for proper CO detection — use the recommended heater drive cycle for accurate readings.
Q: Can I use it for commercial CO life-safety detection?
A: No — the MQ-7 is suitable for hobbyist, educational, and indicative monitoring. For commercial / industrial / life-safety CO detection, use certified CO detectors with regulatory approval (UL, CE-rated). Treat MQ-7 readings as informational, not safety-grade.
Q: Bulk pricing for production runs?
A: Yes — email contact@lys-sz.com with your quantity for tier pricing on educational kits or production deployments.
Related products
- MQ-2 Gas Sensor Module – Arduino / Raspberry Pi
- MQ-135 Air Quality Gas Sensor – Arduino / RPi
- KY-026 Flame Sensor Module – Fire Detection
- HC-SR501 PIR Motion Sensor – Arduino / RPi
Educational kit makers or production OEMs stocking MQ-7 modules? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
