Dahua HY-GA40A Methane Gas Alarm 70dB Wall Mount Detector
Most orders ship within 30 working days. Stock status shown on this page is not real-time.
After you place your order, please check the order confirmation email from our team. We will confirm stock, lead time and shipping before dispatch. If an item is out of stock, we may propose a compatible replacement model for your approval.
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Our team can confirm specifications, stock and pricing before you order.
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HY-GA40A
Natural Gas Alarm
> Operate stably and identify gas type effectively
> Intelligent linkage to close pipeline valve and start exhausting fan
> A built-in high-volume buzzer, 70dB (A) at 1m (3.28 feet)
> Three indicator lights for displaying device status clearly
Product Data
| Technical Specification | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Model | DHI-HY-GA40A | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Gas Type | Methane (CH₄) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Alarm Threshold | 10% LEL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Response Time | ≤30 s | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Supply Voltage | DC12V | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Power Consumption | ≤0.8W | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Output | 1 valve output, 1 relay output | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Operating Temperature | –10°C to +55°C (+14°F to +131°F) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Relative Humidity | ≤95% RH (non condensing) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Warm-up Period | 180 s | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Alarm Method | Visual and audible alarm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Alarm Sound Output | 70dB (A) at 1m (3.28 feet) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Silence | Support | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dimensions | 86.6 mm × 86.6 mm × 29.2 mm (3.41" × 3.41" × 1.15") | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Installation | Wall mount | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Certification | CE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Order & Pricing Information for Surveillance Products
Please note the following important details when ordering surveillance products from ICCTVZONE:
- Order confirmation: After you place an order, please check the confirmation email from our team. We will confirm stock, lead time and shipping before dispatch.
- Stock & replacements: Inventory status is not real-time. If an item is out of stock, we may propose a compatible replacement model for your approval.
- Final pricing: Prices shown are indicative. The final price is confirmed on the Proforma Invoice (PI) after order confirmation.
- Project-specific pricing: Some products are configured for project requirements; pricing may vary with quantity and specification.
- Minimum order: A minimum order value may apply to non-stock or project items; our team will confirm before processing.
- Shipping costs: Shipping is calculated separately and added to the order total.
- Duties & taxes: Import duties, taxes and customs clearance fees are not included in the product price or shipping quote. These charges are the customer's responsibility.
- Genuine products: We supply genuine products from leading brands with current firmware.
- Technical support: Our engineers provide pre-sales and after-sales technical support.
- Warranty: Warranty terms depend on the product and order type; we will confirm the applicable coverage in writing.
Questions? Contact sales@icctvzone.com.
Product Features
What this model is for, what it does well, and what to confirm before it goes on a project.
Wall-mounted methane leak detection in kitchens, boiler rooms and utility spaces where an audible alarm and valve or fan linkage are needed.
The sensor identifies methane leaks at a 10% LEL threshold with a response time of 30 seconds or less, so occupants get early warning.
A 70dB audible alarm at 1m combines with visual indicators to make gas events hard to miss in busy or noisy rooms.
One valve output and one relay output let the alarm trigger a pipeline shutoff valve or exhaust fan for an automated response.
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