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For EWeLink Smoke Detector Sensor Wireless 433MHz Fire Security Protection Alarm Sensors Works With Sonoff RF Bridge Smart Home

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Warm Notice:

Magnetic products cannot be shipped using AliExpress Standard, please choose another logistics method.

1. This smoke sensor can work alone to realize independent alarm at home.


2. To achieve remote control on the phone, smoke detector needs to work with Sonoff RF bridge( 433Mhz, EV1527) host.

3. Because of shipping limitation, battery( DC9V 6F22 )  for smoke detector not included.


1. Support three alarms: independent sound & light flash alarm, wireless 433 transmission network alarm.

2. Full snap-in patented structure, simple installation, no need for debugging and wiring.

3. 360 degrees smoke detection and alarm, no dead angle, reliable.

4. Built-in high-sensitivity sensing technology, reliable and safe.

5. Built-in 90 dB sound and light alarm reminder, effectively prompting people to evacuate.

6. Ultra-low-power microcontroller + photoelectric principle technology, long standby life battery use for 3 years.

7. Adopt high-performance photoelectric two-way scattering patented technology of two-receiving & one-transmitting, stable, reliable and accurate.

8. Low Voltage Alarm: When the battery voltage is lower than 6.8V, a warning sound is issued to remind the user to change the battery.

9. Rotary detachable top cover design to facilitate cleaning and battery replacement.

To add a 433MHz smoke sensor, please install the battery into the sensor. Make sure Sonoff bridge is connected with home wifi already.Then

click Add RF Remote on RF Bridge device on app, select Alarm and confirm. You’ll see a new alarm icon is added to APP. Press and hold its

icon, you’ll hear a beep sound from the RF Bridge, the red led of RF Bridge will start fast blink, which means it has entered into learning mode.

then please press the round button of smoke detector until you hear continious alam sound to transmit signal. You’ll hear two beep sounds,

and the red led of RF Bridge will blink twice. This means the PIR sensor has learnt successfully.



Color: White

Material: ABS + High Sensitivity Sensor

Powered Supply: DC 9V(6F22 Battery, not included)

Transmission Frequency: CD50 independent alarm, CD50W wireless transmission(Support)

Launch Distance: ≥200M (External aerial 500 meters)

Static Current: ≤10uA

Alarm Current: ≤40mA

Alarm Loudness: ≥85dB

Environmental Temperature: -10°C~+60°C

Environmental Humidity: ≤95%RH

Protection area: 60 Square Meters

Installation Height: ≥6m

Smoke Sensitivity: Ⅱ Grade




1. This smoke sensor can work alone to realize independent alarm at home.

2. To achieve remote control on the phone, smoke detector needs to work with Sonoff RF bridge( 433Mhz, EV1527) host.

3. Because of shipping limitation, battery( DC9V 6F22 ) for smoke detector not included.

Package Included:

1 x Wireless Smoke Detector

1 x User Manual






Model Number



Smoke Detector

Power voltage

DC9V(6F22 battery not included)

Alarm Method

Standalone/ wireless transmission for options

Wireless transmission frequency

433MHz, independent detection alarm, wireless transmission (support

Wireless code rule

1527, can skip code

Installation height

above 2m

Working area

60 square meters

Sounder level

more than 85dB

Low voltage Alarm


Products dimension

100×100 x 34mm

Packing box

Color neutral

drop shipping dropship


Shipping and delivery

We are proud to offer international shipping services that currently operate in over 200 countries and islands worldwide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:

Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says "no information available at the moment".

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you have specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.

Refunds & returns policy

Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:

  • You do not receive them within the guaranteed time (45 days not including 2-5 day processing)
  • You receive the wrong item
  • You do not want the product you have received (but you must return the item at your expense and the item must be unused)

We do not issue the refund if:

  • Your order does not arrive due to factors within your control (e.g. providing the wrong shipping address)
  • Your order does not arrive due to exceptional circumstances outside our control (e.g. not cleared by customs, delayed by a natural disaster)
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on page.

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

Real customer reviews

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  1. K***n

    Thank you

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