Dahua HY-SA20A Photoelectric Standalone Smoke Alarm, Ceiling Mount
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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-SA20A
Standalone Smoke Alarm
> Test and hush features in one single button
> Loud sound output over 85 dB(A) at 3 meters
> Low quiescent current consumption
> Surface-mount device (SMD) circuit board design
> Low battery warning signal
Product Data
| Working Principle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Collection Type | Smoke | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sampling Period | 9 s | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sensor Type | Photoelectric | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Alarm | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Alarm Type | Smoke alarm, fault alarm, low battery warning | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Alarm Volume | 85dB (A) at 3 m (9.84 ft) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Alarm Mode | Visual and audible alarm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Silencing Function | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Alarm Response Threshold | 0.2dB/m-0.3dB/m | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Basic Parameters | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Indicator Light | Alarm, fault and operation indicator | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Led Instructions | Standby: Green indicator flashes once per minute Low battery warning: Red indicator flashes once per minute | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Coverage Area | When the height of the space is less than 8 m (3.28 ft), the protection area of a device is 20 m2–40 m2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Power Supply | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Battery Life | 10 year | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Power Source | 3V CR123A lithium battery (replaceable) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Operating Current | Monitoring current: ≤ 15uA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Operating Ambient | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Operating Environment | Indoor | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Operating Temperature | -10°C to +55°C (+14°F to +131°F) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Operating Humidity | ≤ 95% RH (non condensing) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Appearance | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Color | White | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Casing | ABS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dimensions | φ98 mm × H43.1 mm (φ3.85" × H1.70") | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Weight | 136 g (0.30 lb) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Installation | Ceiling Mount | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Certification | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Certifications | TÜV and CE listed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Compliance Standard | EN 14604:2005+AC:2008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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.
Indoor ceiling-mounted smoke detection in rooms with ceilings under 8 m where a self-contained, battery-powered alarm is needed.
Photoelectric split-spectrum sensor technology helps detect smoke early for faster awareness indoors.
A single button handles both testing and silencing, keeping routine checks simple for occupants.
Audible and visual alerts sound over 85 dB(A) at 3 m, so warnings carry across the room.
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