Aegislink Wi-Fi Combination Smoke and Carbon Monoxide Alarm

Introduction

Thank you for purchasing this AEGISLINK SC240-WT Wi-Fi combination smoke and carbon monoxide alarm. This user manual contains important information on installing and operating this AEGISLINK Wi-Fi alarm. Please read this user manual before installation or operation, and save it for future reference.

Package Contents

• 1 x Alarm Unit
• 1 x Mounting Bracket
• 2 x Screws
• 2 x Anchor Plugs
• 1 x User Manual
• 1 x Pin

Product Profile

The alarm unit features the following components:

• Buzzer: Emits audible alarms and notifications.
• LED Indicator: Provides visual status updates (color and flashing patterns).
• LCD Display: Shows CO concentration levels and status messages.
• Test/Silence Button: Used for testing the alarm and silencing alarms.
• AP Mode Button: Used for alternative Wi-Fi connection setup.
• Battery Compartment: Houses the replaceable battery.

Diagram Description: A circular alarm unit is shown with labels pointing to its key components: Buzzer, LED Indicator, LCD Display, Test/Silence Button, AP Mode Button, and Battery Compartment. The LCD display shows "CO", "0", and "PPM". Text around the edge indicates "IMPORTANT: REFER TO OWNER'S MANUAL FOR OPERATING INSTRUCTIONS", "DO NOT PAINT", and "ON TWIST OFF".

LED Indicator and Alarm States

LED Indicator

The LED indicator flashes in conjunction with the buzzer, indicating various states:

• Powering on
• Standby mode
• Smoke or CO alarm states
• Exiting an alarm state
• Test mode
• Low battery
• Silence mode
• Fault
• End of life

Low Battery

The LED indicator flashes yellow with one beep every 60 seconds. Pressing the test button temporarily silences this for 10 hours.

End of Life

After 10 years, the alarm delivers 3 beeps and the LED indicator flashes yellow 3 times every 60 seconds. This can be silenced for 30 days total.

CO Alarm Levels

The alarm sounds at the following CO concentrations:

• 70 ppm for 60–240 minutes
• 150 ppm for 10–50 minutes
• 400 ppm for 4–15 minutes

CO Concentration and Symptoms

The table below shows the effects of different levels of CO poisoning on the body:

WARNING: This device is designed to protect individuals from acute effects of carbon monoxide exposure. It may not fully safeguard individuals with specific medical conditions. If in doubt, consult a medical practitioner.

Basic Safety Information

DANGERS, WARNINGS, AND CAUTIONS ALERT YOU TO IMPORTANT INSTALLATION AND OPERATING INSTRUCTIONS, OR POTENTIAL HAZARDS. PLEASE PAY ATTENTION TO THE SITUATIONS.

IMPORTANT

1. Dangers, warnings, and cautions alert you to important operating instructions or to potentially hazardous situations. Pay special attention to these situations.
2. This combination smoke & carbon monoxide alarm is only approved for home use.
3. This carbon monoxide alarm is designed to detect carbon monoxide from any source of combustion.
4. Constant exposures to high or low humidity may reduce battery life.
5. Smoke alarms are not to be used with detector guards unless the combination has been evaluated and found suitable for that purpose.

WARNING

1. Never ignore any alarm. Failure to respond can result in serious injury or death.
2. The silence feature is only for your convenience and will not correct a problem. Always check your home for a potential problem after any alarm. Failure to do so can result in injury or death.
3. Test this smoke/CO alarm once a week. If the alarm ever fails to test correctly, replace it immediately! If the alarm cannot work properly, it will not alert you to a problem.
4. This product is intended for use in ordinary indoor locations of family living units. It is not designed to measure CO levels in compliance with Occupational Safety and Health Administration (OSHA) commercial or industrial standards. Individuals with medical conditions that may make them more sensitive to carbon monoxide may consider using warning devices which provide audible and visual signals for carbon monoxide concentrations under 30 PPM. For additional information on carbon monoxide and your medical condition contact your physician.
5. The replacement date that appears on the device is the date beyond which the device may no longer detect carbon monoxide accurately and should be immediately replaced.
6. This device is designed to protect individuals from the acute effects of carbon monoxide exposure. It may not fully safeguard individuals with specific medical conditions. If in doubt, consult a medical practitioner.

Set Up and Connect Combination Smoke and Carbon Monoxide Alarms to Wi-Fi

Before connecting, make sure that:

1. You only work with 2 units at a time, and that they are both activated to ensure successful connection.
2. You are connecting alarms to a 2.4 GHz Wi-Fi network (incompatible with 5 GHz Wi-Fi network).

NOTES:

• Make sure you turn on some permissions in the mobile phone settings. Otherwise, the app cannot add devices or will fail to receive push notifications.
• Some contents shown in the App user interface might slightly differ from those in the user manual due to later software upgrades.

How to connect using EZ mode (Default mode)

1. Before installing the alarm, download the TuyaSmart/Smart Life app. Search for TuyaSmart/Smart Life in the App Store or Google Play, or scan the included QR code to install the app. You will also need to register an account.
2. Remove the insulating film from the battery compartment to turn on the alarm. The LED indicator will flash red and then continuously flash green, indicating activation.
3. Open the TuyaSmart/Smart Life app, tap the “+” icon on the Home page, or tap "Add Device" to add your first device.
4. Navigate to "Sensors” -> “Sensor/Alarm" -> "Sensor/Alarm (Wi-Fi)" on the "Add Manually" page to enter the Wi-Fi connecting page.
5. Enter the Wi-Fi password.

NOTE: If your Wi-Fi router is dual-band (2.4 and 5 GHz) with a single SSID, refer to your router manual to create separate SSIDs for the 2.4 and 5 GHz channels. Alternatively, select "Common router setting method" in the app.

6. To enable Wi-Fi connection mode, hold down the test/silence button for 3 seconds. The alarm will beep once, and the LED indicator will rapidly flash green.
7. After a successful connection, the LED indicator will stop flashing green. Click the “+” beside the device to add it. Then, select “Done.” The device will appear on the Home page.

NOTE: If you select "Done" without clicking "+", you will be reminded to add a device.

NOTES on EZ Mode Connection:

• The LED indicator flashes green rapidly for up to 2 minutes. If connection fails, remove the battery briefly and restart from step 2.
• Unsuccessful connection may be due to router, mobile phone, and alarm proximity, or incorrect Wi-Fi password entry.

8. Once connected, proceed to the "Settings" section in the app for notifications and other settings. If connection still fails, try AP mode.

How to connect using AP mode (Alternative mode)

Some mobile phones and devices are not compatible with EZ mode. Use AP mode if needed.

1. Insert a pin into the device pinhole on the back and press the inside button. The alarm will beep once and the LED indicator will flash green slowly, indicating AP mode.
2. Go to your phone's Wi-Fi setup page and select the device's hotspot (e.g., "SmartLife-XXXX" or "SL-XXXX"). After connecting, return to the app to start network configuration.
3. After successful connection, the LED indicator stops flashing green, and the device appears on the Home page.

NOTE: EZ mode LED flashes quickly (approx. 4 times/sec); AP mode LED flashes slowly (approx. 1 time/sec).

App Settings

Notifications Settings

In the app's Settings (gear icon), adjust notification types. Many notifications can increase power consumption, potentially shortening battery life.

CO Concentration Value

When a CO alarm occurs, the real-time CO concentration will be displayed in the app, and a push notification will be sent.

Offline Notification

Enable this to be notified if the alarm loses connection to the Wi-Fi router or cloud server. This helps diagnose network issues or placement problems.

Alarm Test

Always test the alarm:

• When turned on for the first time.
• Whenever the battery is changed or the device is reconfigured.
• Weekly.
• After being away from home for a long time.

To test: Briefly press the test/silence button. (Holding for >3 seconds enters pairing mode and erases settings).

The alarm will emit 2 sets of 3 long beeps followed by 2 sets of 4 quick beeps.

If connected to the router, the LED indicator flashes red then green rapidly.

After testing, the alarm enters standby mode.

NOTES:

• The test function checks electronics, not smoke/CO. If the test signal fails, refer to troubleshooting. Never use an open flame.
• If the LED indicator flashes green for 2 minutes during testing, the connection failed. Repeat Wi-Fi setup.

Installation Positioning

General Guidelines:

• Prioritize smoke alarm installation in bedrooms and walkways for audibility. Install in every bedroom if multiple exist. If only one, place it near bedrooms, not in basements or furnace rooms.
• Install an alarm above the stairway and on every floor.
• Install alarms in the middle of the ceiling where possible, away from corners.
• If ceiling installation isn't possible, install at least 20 in (50 cm) from corners.
• For wall mounting, place 4–12 in (10–30 cm) below the ceiling.
• In rooms longer than 30 ft (900 cm), install multiple alarms.
• On angled ceilings/walls, install within 3 ft (90 cm) of the highest point.
• In multi-level homes, install at least one wireless alarm per level, aligned vertically if possible, with minimal obstacles for signal transmission.

Diagram Description: A floor plan illustrates recommended and not recommended placement areas for Smoke Alarms (SSS), Carbon Monoxide Alarms (CO), and Smoke & Carbon Monoxide Alarms (CO SSS). It shows placement on ceilings and walls relative to corners, dead air spaces, and room dimensions. Another diagram shows placement relative to a ceiling, sidewall, and corners, with specific distances (e.g., 20" minimum from ceiling, 4" minimum from corner, 12" maximum from ceiling for sidewall). A third diagram shows a Wi-Fi router, alarm, and phone, indicating connectivity.

NOTE (Kitchen Installation): If a smoke alarm is in a kitchen, ensure it has an accessible silence button and is placed far from the stove and sink to avoid false alarms.

Locations to Avoid:

WARNING: This product is for ordinary indoor locations. It is not designed for OSHA commercial/industrial standards.

1. Do not install in garages, kitchens, furnace rooms, or bathrooms. Keep at least 5 ft (1.5 m) from cooking appliances.
2. Do not install within 3 ft (0.9 m) of: kitchen/bathroom doors, forced air ducts, ventilating fans, or high airflow areas. Avoid dusty, dirty, or greasy areas, as contaminants can affect sensors.
3. Ensure drapes or objects do not block sensors. Avoid peaks of vaulted ceilings, "A" frame ceilings, or gabled roofs. Keep out of damp/humid areas.
4. Install at least 1 ft (0.3 m) away from fluorescent lights to avoid electronic noise.
5. Do not place in direct sunlight. Keep out of insect-infested areas. Extreme temperatures affect sensitivity.
6. Do not install where temperatures are colder than 40°F (4.4°C) or hotter than 100°F (37.8°C) (e.g., garages, unfinished attics).
7. Do not install where relative humidity (RH) is above 85% or below 10%. Place away from open doors/windows.
8. Smoke alarms should not be used with detector guards unless evaluated and found suitable.

Installation Method

NOTE: Test Wi-Fi alarms in desired rooms before installation to ensure router range and no interference.

1. Use the mounting bracket to mark screw holes on the ceiling or wall.
2. Drill holes at the marks and insert anchor plugs. Screw the mounting bracket using provided screws.
3. Attach the alarm to the bracket and turn clockwise to lock.
4. Test the alarm as described in the "Alarm Test" section.

Diagram Description: Four steps (01, 02, 03, 04) illustrate the installation process: marking holes, drilling and inserting anchors, attaching the bracket, and twisting the alarm onto the bracket.

Silence Function

Temporarily silence a false alarm by pressing the Mute Switch in the app or the test/silence button on the device. The LED will flash red, and an app notification will confirm silencing.

Smoke Silence Mode

If smoke concentration decreases to a safe level after silencing, the alarm stops. Otherwise, it returns to normal mode after 9 minutes.

CO Silence Mode

If CO density remains above the threshold, the alarm re-enters alarm state. Otherwise, it exits silence mode after 9 minutes and resumes normal operation.

Note: Silence function is temporary and does not fix the underlying problem.

Diagram Description: A screenshot of the "Multifunctional Alarm" screen in the TuyaSmart/Smart Life app is shown. It displays "High" status, a "Mute Switch" toggle (currently OFF), and a CO reading of "0 PPM".

Device Status Checklist

This table summarizes the device's modes, display, LED, and audible signals:

Technical Specifications

Maintenance

General Maintenance

Follow these steps for optimum long-term performance:

1. Test the device weekly by pressing the test/silence button. Note: This tests electronics, not smoke/CO.
2. Clean the alarm every three months with a soft, damp cloth. Ensure proper reinstallation.
3. Do not use detergents, solvents, air fresheners, or hair spray near the device.
4. Do not paint the device, as it will seal vents and reduce sensor sensitivity.
5. Do not tamper with the device; this can cause shock or malfunction.
6. Do not disassemble the device; this voids the warranty.

NOTES:

• Battery life is calculated based on weekly test and standby modes. Alarming conditions decrease battery life.
• The alarm functions between 40–100°F (4.4–37.8°C). Extreme temperatures affect performance and battery life.

Weekly Test

Test the alarm weekly, upon first use, after battery replacement, or reconfiguration. Press the test/silence button. Holding it for over 3 seconds re-enters pairing mode and erases settings.

The alarm will emit 2 sets of 3 long beeps followed by 2 sets of 4 quick beeps. If the device fails to signal, refer to Troubleshooting.

Battery Replacement

1. Remove the alarm from the mounting bracket by twisting counterclockwise.
2. Remove the old battery and install a new one, matching polarities.
3. Test the alarm by pressing the test/silence button.
4. Attach the alarm to the bracket by twisting clockwise until secure.

NOTE: After battery replacement, the LED flashes red then green. If it flashes green for over 2 minutes, re-add the alarm to the system.

Diagram Description: Two diagrams show the alarm unit being twisted off and on the mounting bracket.

Troubleshooting

Environmental Protection

Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Check with Local Authority or retailer for recycling advice. ♻️

Manufacturer and Service Information

Smartie International LLC
Address: 160 Greentree Dr, Dover, DE 19904, USA
Email: support@aegislink.co.uk