# Smoke Alarm WisuAlarm HY-SA20A Battery Powered CE-CPR Certified

**URL:** https://aio.lv/en/product--dahua-hy-sa20a--7608954
**Data updated:** 2025-12-02 17:52 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** DAHUA
**Manufacturer code:** HY-SA20A
**EAN:** 6923172549655
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 16.52 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dahua-hy-sa20a--7608954

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

The WisuAlarm Smoke Alarm HY-SA20A is a battery-powered device with a 3V lithium battery. It has a diameter of 9.8 cm and a height of 43.1 mm, weighing 140 g. Certified with CE-CPR(EN14604) AS3786, it ensures reliable smoke detection for safety in homes and offices.

## Long description

Standalone Smoke Alarm continuously monitors smoke concentration using a split-spectrum sensor and a built-in high-volume buzzer. The device detects rising smoke levels and provides visual and audible alerts when the smoke concentration reaches the preset alarm threshold.
Advantages
The smoke alarm uses a split-spectrum sensor for improved sensitivity and reduced false alarms. A high-volume buzzer ensures audible warnings are clearly heard, while stable performance supports continuous monitoring without frequent maintenance.
Key specifications
Type: Standalone smoke alarm
Sensor: Split-spectrum sensor
Alarm output: Built-in high-volume buzzer
Function: Continuous smoke concentration monitoring
Alarm trigger: Activates when smoke concentration reaches alarm value
How to use
Install the standalone smoke alarm on a ceiling or high wall following the manufacturer’s mounting instructions and ensuring unobstructed airflow around the device. Power the unit according to the product manual, then test the alarm using the test button or recommended test procedure. When the device detects smoke at or above the alarm threshold, it emits visual and audible signals to alert occupants.
Recommendations
Place the smoke alarm in key areas such as hallways and bedrooms, avoid installing near windows, vents, or kitchens where false alarms are more likely, and test the device regularly according to the manufacturer’s guidance.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.14 kg |
| Certification | CE-CPR(EN14604)
AS3786 |
| Battery technology | Lithium |
| Operating relative humidity (H-H) | 0 - 95 |
| Package weight | 260 g |
| Battery type | CR123A |
| Operating temperature (T-T) | -10 - 55 |
| Number of batteries supported | 1 |
| Power source | Battery |
| Alarm decibels | 85 dB |
| Height | 43.1 mm |
| LED indicators | Alarm, Fault |
| Connectivity technology | Wireless |
| Product colour | White |
| Battery life | 10 year(s) |
| Diameter | 98 mm |
| Placement supported | Horizontal |
| Package depth | 153 mm |
| Package height | 55 mm |
| Package width | 136 mm |
| Maximum range | 3 m |
| Battery low indication | Yes |
| Battery voltage | 3 V |
| Housing material | ABS |
| Mounting type | Surface-mounted |
| Sampling time | 9 s |
| Detector type | Photoelectrical reflection detector |
| Compatible battery sizes | CR123A |
| Test button | Yes |
| Light alarm | Yes |
| Best uses | Home, Office |
| Alarm mute | Yes |
| Alarm current | 35 mA |
| Suitable for indoor use | Yes |
| Detection area | 40 m² |
| Sustainability compliance | Yes |
| Sustainability certificates | CE |
| Operating current | 15 µA |
| Alarm Response Threshold | 0.3 dB/m |

## FAQ

### How much does the Smoke Alarm WisuAlarm HY-SA20A cost, and is it available for purchase?

The price is 19.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 33 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All DAHUA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized DAHUA service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for Smoke Alarm WisuAlarm HY-SA20A?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/7608954/54673684_large.webp