PRODUCTS
SR-909 4-in-1 Carbon Monoxide & Natural Gas Detector with Large Digital Real-Time Display
SR-909 monitors CO, natural gas, temperature and humidity with a large real-time display and ≥85dB alarm.
4 in 1 CO and Natural Gas Detector SR-909 is a plug-in safety alarm from SUMRING. It combines carbon monoxide detection, natural gas monitoring, temperature readings, and humidity readings in one compact device.
The SR-909 features a large digital color display. Users can check gas concentrations and indoor environmental conditions at a glance. When CO or natural gas reaches its specified alarm level, the detector activates an audible warning and flashing red lights.
For buyers comparing home gas safety devices, the 4 in 1 CO and Natural Gas Detector offers a convenient way to monitor two gas hazards and two environmental conditions. The SR-909 combines these readings in one digital display, reducing the need to check multiple standalone monitors.
With AC 110–220V power and a compact housing, this detector is designed for homes, apartments, kitchens, and residential safety projects. SUMRING also welcomes wholesale and OEM/ODM inquiries from distributors and private-label brands.
Key Features of the 4 in 1 CO and Natural Gas Detector
- 4-in-1 Monitoring: Detects carbon monoxide and natural gas while displaying temperature and humidity.
- Large Digital Display: Shows real-time CO readings, natural gas levels, temperature, and relative humidity.
- CO Detection: Uses electrochemical sensing technology with a specified detection range of 0–2000 ppm.
- Natural Gas Detection: Monitors combustible gas levels from 0–10% LEL, with an alarm level of 5% LEL.
- Audible and Visual Alarm: Produces an alarm of at least 85 dB with flashing red indicator lights.
- Plug-In Power: Operates on AC 110–220V without separate signal wiring.
- Self-Test Function: Includes a test button for checking audible and visual alarm operation.
- Compact Design: Measures 75 × 79 × 53 mm and supports convenient installation in suitable indoor locations.
The 4 in 1 CO and Natural Gas Detector is designed for indoor monitoring applications where a compatible AC outlet is available. Buyers should confirm the installation location, plug configuration, and applicable safety requirements before ordering.
SR-909 4 in 1 CO and Natural Gas Detector Specifications
The following table lists the main electrical, detection, alarm, and environmental specifications of the SR-909.
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Model Number | SR-909 | Product Type | 4-in-1 CO and Natural Gas Detector |
| Power Supply | AC 110–220V | Static Power Consumption | ≤2W |
| Alarm Power Consumption | ≤3W | CO Detection Range | 0–2000 ppm |
| CO Alarm Concentration | 150 ppm | Minimum CO Display Concentration | >0 ppm |
| Natural Gas Detection Range | 0–10% LEL | Natural Gas Alarm Concentration | 5% LEL |
| Alarm Sound Level | ≥85 dB | Alarm Indication | Flashing Red Light + Audible Alarm |
| Preheating Countdown | 180 seconds | Self-Test Function | Button-Activated Audible and Visual Test |
| Operating Temperature | -10°C to +55°C | Operating Humidity | ≤95% RH, Non-Condensing |
| Storage Temperature | -25°C to +55°C | Storage Humidity | ≤95% RH, Non-Condensing |
| Temperature Display Range | 1–176°F (±4°F) | Humidity Display Range | 0–99% (±5%) |
| Dimensions | 75 × 79 × 53 mm | Brand | SUMRING |
Note: Technical data is based on the published SR-909 specifications. Confirm the plug type, applicable standards, and installation requirements before ordering for a specific market.
How Does the 4 in 1 CO and Natural Gas Detector Work?
The SR-909 continuously monitors the surrounding air through its gas detection system. Its microprocessor processes sensor signals and compares gas readings with the specified alarm levels.
Step 1: Connect the Power
Connect the detector to a compatible AC 110–220V outlet. After power-up, the unit completes a 180-second preheating countdown before normal monitoring.
Step 2: Monitor Carbon Monoxide
An electrochemical sensor measures CO concentration. The detector provides a reading within its specified 0–2000 ppm detection range.
Step 3: Detect Natural Gas
The gas detection system monitors natural gas concentration within the specified 0–10% LEL range. LEL refers to the Lower Explosive Limit.
Step 4: Display Environmental Readings
The digital screen displays CO, natural gas, temperature, and relative humidity information. This allows users to review several indoor conditions from one device.
Step 5: Activate the Alarm
The published alarm levels are 150 ppm for CO and 5% LEL for natural gas. When the corresponding alarm condition is reached, the unit provides an audible warning of at least 85 dB and flashing red lights.
Users can also press the self-test button to check the alarm indicators. This test checks alarm operation but does not replace professional gas-sensor testing.
Carbon Monoxide Safety and Indoor Air Quality
Carbon monoxide is a colorless, odorless gas that can create serious health risks. Proper detector selection, installation, and regular maintenance are important parts of indoor safety.
For independent safety guidance, read the CDC carbon monoxide safety guidelines and the EPA guide to carbon monoxide and indoor air quality.
Always follow local safety regulations and the installation instructions for the detector. Confirm the required product certification and backup-power provisions for each target market.
FAQs
1. What does a 4 in 1 CO and Natural Gas Detector detect?
The SR-909 detects carbon monoxide and natural gas. It also measures temperature and relative humidity. These four functions are combined in one plug-in detector with a digital display.
2. Can the SR-909 detect both carbon monoxide and methane?
Yes. The SR-909 is designed to monitor CO and natural gas, which mainly consists of methane. A standard CO-only alarm does not necessarily detect natural gas. The SR-909 includes both gas detection functions.
3. What are the CO and natural gas alarm thresholds?
The published SR-909 specifications list a CO alarm concentration of 150 ppm and a natural gas alarm level of 5% LEL. Buyers should confirm the applicable alarm performance and certification requirements for their target markets.
4. Does the SR-909 display temperature and humidity?
Yes. The digital screen shows temperature and relative humidity alongside gas readings. The specified temperature display range is 1–176°F, while the humidity display range is 0–99%.
5. Does the SR-909 require batteries or hardwiring?
The SR-909 uses AC 110–220V plug-in power. It does not require a separate battery for normal operation or additional signal wiring. The available outlet type and plug configuration should be confirmed before purchase.
6. How long does the SR-909 take to start monitoring?
The SR-909 has a specified preheating countdown of 180 seconds after power-up. Allow the countdown to finish before relying on normal monitoring. Follow the product manual for installation and startup instructions.
7. How can I test the SR-909 gas detector alarm?
Press the self-inspection button. During a normal self-test, the red indicator flashes and the audible alarm sounds. This confirms basic warning functions but does not verify gas sensor calibration or response accuracy.
8. Can I order the SR-909 with OEM or ODM customization?
SUMRING welcomes OEM and ODM inquiries for wholesale and project orders. Branding, packaging, manuals, and market-specific requirements can be discussed. Available options depend on the order specifications and technical feasibility.
Wholesale and OEM/ODM Gas Detector Solutions
SUMRING supplies gas detection products for distributors, wholesalers, importers, and project customers. The SR-909 is a practical option for buyers sourcing a combined carbon monoxide and natural gas alarm with environmental monitoring.
For distributors and private-label brands, the 4 in 1 CO and Natural Gas Detector SR-909 can be evaluated for wholesale supply and OEM/ODM projects. SUMRING can discuss branding, packaging, documentation, and order requirements based on the customer’s target market.
For other product configurations, explore our multi-gas detector range or compare the SR-910 CO and natural gas detector.
Learn more in our guide: Do Carbon Monoxide Detectors Detect Natural Gas?
Looking for SR-909 wholesale pricing or OEM/ODM options? Contact SUMRING to discuss product specifications, order quantities, customization, and delivery requirements.