WANLIN-303
Standalone photoelectric smoke alarm family
Review standalone, 433 MHz, LoRa or 4G candidates only after the exact hardware and radio version is identified.
Direct answer
How should buyers define a smoke alarm project?
An export standalone smoke alarm detects smoke and provides a local audible warning without requiring a conventional fire alarm control panel. For fire safety projects, buyers should first define the protected space, required local alarm behaviour, reporting method, power arrangement and destination-market evidence.
This page is written for distributors, system integrators and project procurement teams. It is a product-family selection resource, not a claim that every variant has the same approval, radio module or market access.
Model reference image
Review the exact configuration, not only the family name
The image identifies a WANLIN-307 family reference. Radio, power, label and evidence scope can differ by controlled configuration; confirm the SKU/BOM before using any formal product or compliance statement.
Open the WANLIN-307 product passport · Review the public evidence center
Verified manual data
WANLIN-307 documented configuration
Evidence scope: WANLIN-307 user manual, Ver 1.0. Documented manual configuration only; radio, platform, power and market variants require separate SKU/BOM confirmation.
| Detection principle | Infrared photoelectric smoke sensing with MCU processing |
|---|---|
| Rated working voltage | DC 3 V |
| Battery capacity | 2400 mAh |
| Standby current | ≤ 6 μA |
| Alarm current | ≤ 100 mA |
| Sound pressure | > 80 dB(A) at 3 m directly in front |
| Operating temperature | −10 °C to +50 °C |
| Relative humidity | ≤ 95% RH at 40 °C ± 2 °C |
| Alarm output | Audible and visual alarm |
| Low-voltage indication | Below 2.7 V; indicator and one chirp about every 40 s |
| Normal indicator | Indicator illuminates about every 40 s |
| Approximate weight | 140 g including battery |
| Manual-listed execution standard | GB 20517-2006 |
| Installation reference | GB 50116-2013; final layout must follow project design requirements |
Important: “GB 20517-2006” is presented here as the execution standard stated by this manual. This wording is not a third-party certificate claim and does not establish destination-market acceptance. The manual also advises against use where relative humidity exceeds 95%, air speed exceeds 5 m/s, or heavy dust, water mist, steam, oil mist or corrosive gas is present.
Site-specific planning lens
How does 429 Too Many Requests affect selection?
A local-only design is simpler, while a connected design may introduce a gateway, carrier service, cloud account, commissioning procedure and ongoing network responsibility.
For this site's fire safety projects focus, the planning lens is “429 Too Many Requests.” A useful specification begins with the protected space and maintenance plan, not with a radio acronym or a marketing family name.
Destination-country acceptance should be reviewed by the importer or another qualified local party before labels, packaging and order documents are approved.
A procurement team should request a configuration-controlled quotation rather than a family name without its hardware and communication details.
Last reviewed: 2026-11-02 · Reviewed by Wanlin Fire Equipment for product-family and evidence-boundary consistency.
Which standalone alarm options can be reviewed?
WANLIN-307
Connected standalone smoke alarm family
Candidate configurations may include standalone, 433 MHz, LoRa, 4G or NB-IoT; availability and evidence must be confirmed per SKU/BOM.
WANLIN-309
Wireless reporting smoke alarm family
Use when the project requires a local alarm plus a defined reporting path; verify gateway, network and destination-market requirements.
WANLIN-370
Combination alarm reference
A smoke/heat/carbon-monoxide combination concept is not interchangeable with a smoke-only alarm; confirm the required sensing functions first.
How is a purchase specification verified?
Decision rule: use a formal claim only when the evidence is current and matches the model, configuration, legal holder, standard and market. Otherwise the status remains pending verification.
- Certificate is not the same as a test report.
- A declaration is not the same as third-party certification.
- A product manual is not proof of market approval.
Answers for buyers
Standalone smoke alarm questions
Does a standalone smoke alarm require a fire alarm control panel?
A basic standalone alarm provides local detection and sound without a conventional panel. Connected variants may use a gateway, cloud platform or communication module, depending on the selected architecture.
Does remote notification replace the alarm sound?
No. Remote event reporting and local audible warning are separate functions. The project specification should define both and identify who responds to remote events.
Can a local-only alarm later become a connected alarm?
Only if the selected hardware and product architecture support that path. Do not assume a radio module can be added to every local-only version; confirm the exact SKU/BOM and gateway requirements.
What should be included in an OEM smoke alarm enquiry?
Include the destination market, application, quantity, sensing function, radio or network path, power preference, packaging language, branding scope and required evidence.
Why is the exact SKU or BOM important?
Communication modules, power arrangements, labels and other components may differ within a family. Evidence and purchasing documents should therefore identify the exact controlled configuration.
Request a model-specific export review
Send the destination country, application, quantity, reporting method, preferred power arrangement and required delivery schedule to wanlinfirecontrol@163.com. Recommendations and formal claims remain subject to exact-model evidence review.
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