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DET-SMK/AC/1 & DET-SMK/AC/10 Smoke Alarm Troubleshooting Guide

TESTING YOUR DET-SMK/AC/1 & DET-SMK/AC/10 SMOKE ALARMS

We recommend testing your DET-SMK/AC/1 & DET-SMK/AC/10 Smoke Alarms monthly to confirm they are working correctly.

1. Firstly, check that the green LED on the face of the alarm is illuminated. This means that mains power is connected.

2. Press and hold the Test button on the face of the alarm for two seconds. The alarm will sound 3 short chirps, pause for 1.5 seconds, and then continue sounding until you release the button. This confirms the alarm is working.

3. If your alarms are hardwired interconnected, test each unit individually. While holding the Test button, the triggered alarm will sound, and any interconnected alarms should also activate. Have someone check all other alarms are sounding while this button is pressed.

4. After testing, ensure the red LED on each alarm is flashing. This will continue for approximately three minutes, indicating the test was successful.

For more guidance, watch the video:

How to Test MATelec DET-SMK/AC/1, /10 & DET-SMK/RF/AC/1, /10 Smoke Alarms
LED SIGNALS & AUDIBLE ALERTS REFERENCE TABLE
Operation Red LED Status Sound
Standby Status (Normal operation) Red LED flashes every 48 seconds Normal operation.
AC Power Indication Green LED illuminates continuously. AC power connected.
Low Battery Warning The unit chirps & Red LED flashes once every 48 seconds. Low battery voltage - replace with a new battery
as soon as possible.
Fault Warning The unit beeps twice and flashes twice every 48 seconds The unit may be faulty - refer to “Trouble Shooting” section.
End-of-life Warning The unit chirps & Red LED flashes twice every 48 seconds The unit will send end-of-life warning after working 10 years. Replace with a new smoke alarm.
Test Function Red LED flashes once every second with alarm sounding until the TEST button is released.
  • Test by pressing the TEST button on the smoke alarm for at least 5 seconds.
  • The alarm will sound if all functioning properly.
  • If no alarm sounds, refer to “Troubleshooting”.
  • Recommend testing the alarm weekly by pressing the TEST button.
Hush Mode The Red LED flashes every 8 seconds.
  • This smoke alarm has a built-in Silence feature.
  • If cooking or other false triggers cause the alarm to sound, it can be temporarily silenced by pressing the HUSH button for more than 2 seconds.
  • The alarm enters Hush mode for 10 minutes.
  • After the 10 minute hushed period, the smoke alarm will resume normal operation.
Alarm Triggered The Red LED flashes every second with alarm sounding. Smoke (or false trigger) detected and alarm sounds.
Alarm Memory The Red LED flashes twice every 24 seconds After the unit triggers, it enters a memory state, and the red LED flashes twice every 24 seconds for one week.
Interconnection Alarm The unit alarms sounds without Red LED flashing. The unit will enter the interconnection alarm mode when interconnected alarm signals received.
Interconnection Alarm Memory The Red LED flashes once, every 1 second. After the unit exits Interconnection alarm state, it enters Interconnection alarm memory state, and red LED flashes once, every 1 second, for 3 minutes.
Do Not Disturb Function Red LED flashes once every 48 seconds When the unit indicates a low battery, pushing the HUSH button will silence the alarm for 10 hours and red LED will flash once every 48 seconds.
Red LED flashes twice every 48 seconds When the unit indicates a internal fault, pushing the HUSH button will silence the alarm for 10 hours and red LED will flash twice every 48 seconds.

For more guidance, watch the video:

Understanding the LED signals and audible alarms on MATelec DET-SMK/AC/1 and /10 Smoke Alarms
Using HUSH mode & locating triggered alarms on MATelec DET-SMK/AC/1 /10 and RF/AC/1 /10 Smoke Alarms

FACTORY RESETTING DET-SMK/AC/1 & DET-SMK/AC/10 SMOKE ALARMS

To restore your DET-SMK/AC/1 & DET-SMK/AC/10 Smoke Alarms to their factory settings:

1. Isolate the mains power by pushing the button on the side of the alarm to detach the head from the base and have it swing down from the ceiling.

2. Remove the backup battery.

3. Press and hold the Test button for 15 seconds to discharge any residual or stored power in the unit.

4. Repeat these on all hardwired interconnected alarms before replacing batteries or reattaching head units to the bases.

5. Insert fresh backup batteries, then swing each head unit back up and secure it onto its base until it clicks into place.

For more guidance, watch the video:

How to Factory Reset MATelec DET-SMK/AC/1 and /10 Smoke Alarms

DET-SMK/AC/1 SMOKE ALARM BATTERY INFORMATION

The DET-SMK/AC/1 Smoke Alarm includes a one-year alkaline backup battery designed to keep the alarm operating during a power outage. This battery should be replaced every 12 months.

1. A single chirp accompanied by a red LED flash every 48 seconds indicates the backup battery needs replacing. This alert cannot be silenced until the battery is changed.

2. Press the Push button on the side of the alarm to release it from its base. Open the alarm body and replace the backup battery with a new one.

3. Close the alarm body securely, then refit the unit onto its base until it clicks into place.

For more guidance, watch the video:

Replacing the battery in MATelec DET-SMK/AC/1 and DET-SMK/RF/AC/1 Smoke Alarms

THE DET-SMK/AC/10 SMOKE ALARM BATTERY AND REPLACEMENT INFORMATION

The DET-SMK/AC/10 Smoke Alarm contains a non-replaceable 10-year battery designed to last for the full life of the unit.

1. When the alarm reaches the end of its service life, it will emit one chirp with two red LED flashes every 48 seconds.

2. This signal means the entire unit must be replaced. You can also confirm this by checking the printed expiry date on the back of the alarm.

For more guidance, watch the video:

Battery & Unit Replacement for MATelec DET-SMK AC & RF Smoke Alarms (1-Year & 10-Year Models)

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