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SM11R4 Interlinked Smoke Alarm (SCDF Approved)

(21 customer reviews)


  • Interlink-able to up to 30pcs
  • Elegant and modern design with slim side profile
  • Loud alarm (>85dB)
  • TUV  Rheinland certified (EN:14604)
  • Can combine with HD11R Interlinked Heat Alarm (purchase separately)
  • Can be operated with SM11R4-RC Remote Control (purchase separately)
  • 10 Years Battery Warranty
    Only applicable with a review, else 3 years battery warranty applies
  • 10 Years Product Warranty
  • FREE & FAST (2 Business Days) Shipping
  • Unsure of how many smoke detectors needed? Get a quick recommendation here.
SKU: SM11R4 Category:


With up to 30 units interlinkable in a cluster, no corners in your home are left unmonitored.

SM11R4 Interlinked (30pcs)

Always Connected Through Walls & Doors

Operated on 433MHz radio frequency with GFSK modulation allows longer transmission distance and improved walls & doors penetration to ensure all smoke detectors remain connected ALWAYS.

Radio Frequency 433MHz

Add In Heat Alarms To Create An All-Rounded Fire Threat Detection

This model of interlinkable smoke alarm can also be linked with HD11R heat alarm (to be purchased separately) to provide heat detection in areas such as kitchens where smoke alarms are not recommended for installation due to the high grease, high smoke environment.

SM11R4 Interlinked HD11R and Remote Control

Modern & Elegant Design

Say goodbye to old school heat alarm design. SM11R4 is sleeker and slimmer than other heat alarms and it fits perfectly into your house decor, regardless of the theme.


10 Years of Continuous Power

Powered by lithium battery, our smoke detector provides 10 years of continuous smoke detection, every day of the year.

No BatteryChange

Carefully Calibrated Photoelectric Sensor

Not all photoelectric smoke detectors have the same level of sensitivity. Our smoke detectors are subjected to different household environment and smoke density to get the best balance of sensitivity, in order to ensure that we only alert you when there is a real fire threat.

Photoelectric Chamber

Anti Dust Design

We also eliminate false alarms with a revolutionary anti-dust design around the photoelectric sensor chamber, blocking out dust particles which may otherwise trigger an alarm.

No Ceiling Too High To Reach

There should not be a need to have to use a ladder / stool whenever you want to test the smoke detector. Testing is made easy with the remote control option (to be purchased separately) where you can easily test or silence the alarms with just a press of the button.

SM11R Remote Control Front With Battery

Don’t want the remote control option? Testing is made easy with our big test button (marked orange), which is the entire surface of the smoke alarm. Doesn’t matter if it’s HDB @ 2.6m, or Condominium @ 3 – 3.6m, or even Landed with ceiling height upwards of 3.6m. All you need is just an extendable pole.

Test Silence Button

Hassle Free Installation

No mess, no hassle with double-sided industrial grade 3M PE foam tape. Simply peel off the protective layer and stick our smoke detector up on the ceiling. Of course, if you want to go the traditional way, that is fine as well with our provided wall anchor plugs and screws.

Double Sided Tape & Screws

Weight 200 g
Dimensions 120 × 120 × 40 mm
Battery Life

10 Years


>85dB within 3m

Wireless Frequency


Wireless Transmission Distance

100m in open area


Up to 95%RH

Operating Temperature

-10°C – 50°C

Installation Method

Ceiling Mounted


ABS fireproof material



21 reviews for SM11R4 Interlinked Smoke Alarm (SCDF Approved)

  1. Jean Tan (verified owner)

    works as expected

  2. Safarudin A R (verified owner)

    Very good product in design and practicabilty.There’s even SCDF approval.Very user friendly and easy to install.

  3. Jeremy Fox (verified owner)

    Thank you to the team at BLAZEGUARD – great advice during the purchase of units, quick and efficient delivery and installation, and very good after sales follow up – all in all a very refreshing experience in today’s modern World – Thank you to the Team

  4. Eng Soon (verified owner)

    I was searching around for linked Fire Alarms and chanced upon BlazeGuard. Quick response to queries, interested to educate and came down to help with installation. Overall a very good experience. Thanks.

  5. Mei Yuan (verified owner)

    1. Device very Easy to install
    2. Device is light weight, nice design and sturdy
    3. Prompt response and helpful customer service via whatsapp

  6. Joseph T. (verified owner)

    Thank You BlazeGuard, i’m very impressed by the efficiency and fast response by the team in handling my enquries. Especially thank CJ who handled my order and super prompt respond via whatapp and processed my order. Very happy customer.

  7. Mamta Ruparel (verified owner)

    Fantastic experience. Quick delivery, on hand for advice about what to purchase, where and how to install alarms. Very helpful indeed. Highly recommend.

  8. Alan P (verified owner)

    Very good service. Delivered quickly & units were paired by seller

  9. Benjamin H (verified owner)

    Bought two sets of the interconnect HFAD. Truly surprised with the level of service that I received from the seller. Seller connected all the HFAD before sending it out. I also received advice for where to set it up. Excellent after sale service.

  10. Desiree Huang (verified owner)

    We needed a linked smoke alarm as part of the SCDF requirement for TOP and. This product is the best value for money that I have found in Singapore and works well.
    More importantly, the service was excellent. Not only was the response quick, CJ was extremely helpful in his recommendations and sending me the necessary documentation.
    One of the units we had installed seemed to have a problem and CJ walked us through a troubleshooting process. When that didn’t resolve the problem, without hesitation, he changed the piece and relinked the replacement with the other units.
    I would definitely recommend Blazeguard and their service!

  11. Wilson Yeo (verified owner)

    The staff is highly responsive, knowledgeable, helpful and patient. They provide fast delivery and 10 years warranty. Thank you BlazeGuard!

  12. Ridzwan (verified owner)

    Splendid overall. From the explaination to the delivery. CJ is so patient and understanding. Will recommend him to my peers!

  13. Nicholas Chen (verified owner)

    Simple and hassle free

  14. evy (verified owner)

    prompt reply, quick delivery, customised service. Products are well packaged as well.

  15. Tanya (verified owner)

    Really really great service. Even helped me with the location of the alarms. Can’t recommend Seller enough. Thanks very much for your service and help!

  16. Kuan-Ming Lee (verified owner)

    Had a great experience working with BlazeGuard and purchasing their products. The team was very patient in advising on where to install the detectors given the home layout, and also the right products to purchase. They also took time to answer any questions I had and to send relevant links that provide the answers. Highly recommended!

  17. Holger Lindner (verified owner)

    Added the connected smoke detector to my existing WIFI connected smoke detector and it works seamlessly. The BlazeGuard team once again was very responsive and helpful in guiding me through the set-up and pairing process and answering some questions along the way. Great customer service !

  18. Pris.H (verified owner)

    The service is excellent. Replies are answered quickly and the smoke detectors were set up easily and quickly.

  19. Jayce (verified owner)

    Excellent response n customer services from seller. Seller is very patient to reply all enquiries n they ensure product meet my needs.

  20. Lim CC (verified owner)

    Had a very good experience in chatting with merchant before I paid. Guided me on the difference of the products and even volunteered to connect the 7 HFAD units without me asking. Bonus was the free wine stopper! Many thanks again for your help!

  21. Edwin (verified owner)

    Great pre-sales advice from Blaze Guard on placement of the fire alarms and the types of alarms to buy. Thank you!

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Smoke Detectors (3)

This FAQ serves to guide you on what to do in event of false alarms in smoke detectors.

A false alarm is an event where a smoke detector is triggered but there’s no smoke around. False alarm is usually caused by some fine particles entering the smoke sensing chamber. As these particles move around in the chamber, they affect the photoelectric behaviour and may trigger the smoke detector.

This is the reason why we do not recommend installing smoke detectors in dusty, greasy, high humidity or windy areas. You can refer to this post to find out where to avoid installing smoke detectors. If you have smoke detectors in any of these areas, you may have to consider relocating that smoke detector.

If the smoke detector isn’t in any of these areas, then it may be just sheer luck that some fine particles entered the smoke sensing chamber of the smoke detector. In this case, perform a maintenance on the smoke detector. You can refer to this post on how to how a simple cleaning of the smoke detector.

There are 2 ways of maintenance:

  1. Vacuum cleaner
  2. Compressed air duster

Compressed air duster (#2) is the preferred option but if you do not have a canister of compressed air duster, the vacuum cleaner option is a good alternative.

If after doing maintenance with vacuum cleaner and false alarms persist, then you may have to consider purchasing a compressed air duster. You can find them from Lazada or Shopee.

If after doing maintenance with compressed air duster and false alarms persist, you may have to consider relocating that smoke detector even though it may not be installed in any of abovementioned dusty, greasy, high humidity or windy areas.

Category: Smoke Detectors

Certification of SM11R4 / SM11W

Product Brochure

Certificate of Constancy of Performance

SCDF accepts multiple certifications for HFAD (home fire alarm devices) other than CoC (certificate of conformity). This model of smoke detector has an international certificate of constancy of performance that’s certified by TUV Rheinland. This is considered as CE marked with certification from approved 3rd Party Notified Bodies.

You can also view the online certificate at this link.

Technical Data Sheet

SCDF FSC Form Completion

This is how one would fill up the SCDF FSC form on HFAD.

  • Certification Category: CE marked with certification from approved 3rd party Notified Bodies
  • Certificate Body: TUV Rheinland
  • Certificate Number: 1008-CPR-MC 69265247 0001
  • Validity Period From: 29/03/2021
  • Validity Period To: Leave it blank
  • Delivery Order Date: Date printed on invoice or day where order is received
click to see bigger image
Category: Smoke Detectors

I still have some questions on smoke detectors.

Check out our extensive Smoke Detectors FAQ here.

I have a question that is not in your FAQ. Can you help me?

Yes, definitely. Simply whatsapp @ 8815 8752 or email to on your question and we would help to address it. You can also read up our Ultimate Smoke Detector Guide as it contains more in-depth information on smoke detectors.

Category: Smoke Detectors

Warranty & Returns (3)

How to do a remote return?

Smoke Detectors

All smoke detector replacements will need to have the original unit returned to us.

  • If it is an on-site replacement, we will collect back the original unit on-site.
  • If it is a remote replacement, you will need to send us back the original unit. See section Remote Return.

Remote Return

  1. In the package that has your replacement units sent to you, you will find the following items as well:
    • Additional courier packaging bag
    • Bubble wrap bag(s)
  2. Once you have installed the replacement units, please pack your existing units, including all accessories into the original packaging boxes that comes with your replacement order.
  3. Put the packaging boxes into the provided bubble wrap bags (1 bag for each box).
  4. Put the packaging boxes into the additional courier packaging bag and seal it.
  5. Whatsapp us @ 88158752 when this is completed.
  6. We will arrange a pickup and email/whatsapp you an airway bill (AWB) within 24hrs.
  7. You have to print out this AWB and slot into the clear pocket of the courier packaging bag. This step needs to be completed before the Registered Date printed on the AWB.
  8. Collection will happen on the Registered Date, between 8am – 11pm.

Should there be any missing items / accessories that are not included in the return, Customer will have to bear the cost of delivering those missing items / accessories back with tracking.

Category: Warranty & Returns

Blaze Guard will conduct an on-site battery replacement if the smoke detector enters LOW BATTERY MODE (refer to instruction manual) within warranty period.

  1. 10 Years Battery Warranty applies only if the condition below is met:
    1. a review/recommendation has been given. Refer to this link for step-by-step guide in giving a review/recommendation.
  2. For avoidance of doubt, if #1.1 is not done, only a 3 years battery warranty applies.
  3. 10 Years Battery Warranty excludes the battery source for the wifi-base of the Wifi Interconnect Smoke Detector.
  4. Warranty period counts from date of purchase.
  5. Blaze Guard will conduct an on-site battery replacement if the smoke detector enters LOW BATTERY MODE (refer to instruction manual) within warranty period.
    1. On-site replacement is only for detectors installed <3m in height. For locations >3m, you will need to arrange handyman services to take down the detectors for us to do battery replacement.
  6. On-site battery replacement request must be liaised with Blaze Guard via email: first.
  7. Original invoice showing date of purchase is required.

Category: Warranty & Returns

Warranty registration is not required.
All items are inspected thoroughly prior to delivery.


  • Warranty registration is not required to qualify for warranty. Simply ensure you keep the email invoice (don’t delete it).
  • All items are inspected thoroughly prior to delivery. Where possible, a picture will be sent to consumer first before delivery.
  • Blaze Guard reserves the right to refuse any 1-1 exchange if the defect is deemed to be caused by consumer, intentionally or unintentionally.

Smoke Alarms

  • 10 years battery warranty (T&C applies)
    In absence of a review/recommendation to our Facebook page, a 3 years battery warranty will apply instead.
  • 10 years product warranty excluding battery
  • 100 days fully refundable trial (T&C applies)
  • 7 days 1-1 exchange for physical defects
    • Includes only the following:
      • Cracks on smoke alarm

Fire Extinguishers

  • 7 days 1-1 exchange for physical defects
    • Includes only the following:
      • Scratch marks on fire extinguisher that are clearly visible from a distance of 30cm
      • Broken safety clip
      • Cracked pressure gauge
  • 1 year 1-1 exchange if pressure gauge falls out of green zone

Category: Warranty & Returns