HATHEPHS CS02
HATHEPHS Smoke and Carbon Monoxide Alarm User Manual
Model: CS02
Introduction
Thank you for choosing the HATHEPHS Smoke and Carbon Monoxide Alarm. This device is designed to provide reliable 2-in-1 protection for your home by detecting both smoke and carbon monoxide. Featuring a 10-year built-in battery and easy installation, it offers continuous safety and peace of mind. Please read this manual thoroughly before installation and use to ensure proper operation and safety.

Image: Two HATHEPHS Smoke and Carbon Monoxide Alarms, showcasing their compact and circular design.
Safety Information
- Important: This device is designed to detect smoke and carbon monoxide. It is not designed to detect fire, heat, or other gases.
- Placement: Install alarms in accordance with local building codes and regulations. Refer to the "Installation" section for optimal placement.
- Testing: Test the alarm weekly to ensure proper operation. Refer to the "Operating Instructions" section for testing procedures.
- Alarm Response: If the alarm sounds, evacuate all occupants immediately and call emergency services. Do not re-enter the premises until cleared by authorities.
- Battery: The device contains a sealed 10-year lithium battery. Do not attempt to replace the battery.
- Maintenance: Keep the alarm clean and free from dust. Do not paint the alarm.
Product Overview
The HATHEPHS Smoke and Carbon Monoxide Alarm combines two essential safety functions into one compact device. It features advanced photoelectric and electrochemical sensors for high sensitivity and accuracy.
Key Features:
- 2-in-1 Protection: Detects both smoke and carbon monoxide with dual sensors.
- 10-Year Built-In Battery: Provides continuous power for a decade, eliminating battery replacement.
- High Sensitivity & Accuracy: Upgraded photoelectric and electrochemical sensors ensure faster response times and fewer false alarms.
- Large Test/Silence Button: The entire top cover acts as a button for easy testing or muting, even with a long stick.
- Ultra-Thin Design: Compact dimensions (Ø 4.7 x 1.1 inches) allow for discreet installation.
- Audible Alarm: Alerts with a loud alarm exceeding 85 dB.

Image: The alarm providing 2-in-1 protection against smoke and carbon monoxide in a home environment.

Image: The alarm's 10-year battery life, emphasizing long-term protection for families.
Setup and Installation
The HATHEPHS alarm offers quick and straightforward installation using either adhesive tape or screws.
Included Components:
- 2 x Combination Smoke & CO Alarm
- 2 x Mounting Bracket
- 2 x Adhesive Tape
- 4 x Screws/Anchors
- 1 x User Manual (this document)
Activation Before Use:
- Before mounting, press and hold the center of the top cover for approximately 10 seconds.
- The LED indicator will light up, and you will hear a beep, indicating the device is activated and ready for use.
Installation Steps:
Choose one of the following installation methods:
Method 1: Adhesive Tape Installation (More convenient)
- Ensure the mounting surface (wall or ceiling) is clean, dry, and smooth.
- Peel the protective backing from the adhesive tape.
- Attach the adhesive tape firmly to the back of the mounting bracket.
- Press the mounting bracket firmly onto the desired installation location for at least 30 seconds.
- Align the alarm with the mounting bracket and twist clockwise until it clicks into place.
Method 2: Screw Installation (More secure)
- Choose a suitable installation location.
- Use the mounting bracket as a template to mark the positions for the screw holes on the wall or ceiling.
- Drill holes at the marked positions and insert the provided anchors (if installing into drywall or plaster).
- Secure the mounting bracket to the surface using the provided screws.
- Align the alarm with the mounting bracket and twist clockwise until it clicks into place.

Image: Visual guide for easy installation using either adhesive tape or screws.
Recommended Placement:
- Install at least one alarm on every level of your home, including basements and attics.
- For optimal smoke detection, install alarms in hallways outside sleeping areas and in living rooms.
- For optimal carbon monoxide detection, install alarms near sleeping areas and in rooms where fuel-burning appliances are located.
- Avoid installing near windows, doors, or vents where drafts could interfere with detection.
- Avoid installing in kitchens or bathrooms where steam or cooking fumes could cause false alarms.
Operating Instructions
Testing the Alarm:
It is recommended to test your alarm weekly to ensure it is functioning correctly.
- Press and hold the large test/silence button (the entire top cover) for a few seconds.
- The alarm will sound a loud, pulsating tone, and the LED indicator will flash.
- Release the button. The alarm should stop.
- If the alarm does not sound or the LED does not flash, refer to the Troubleshooting section.

Image: Demonstrating how to easily test or mute the alarm using a long stick.
Silencing a Nuisance Alarm:
If the alarm sounds due to non-emergency conditions (e.g., cooking fumes), you can temporarily silence it.
- Press the large test/silence button once.
- The alarm will enter a temporary silence mode for approximately 9 minutes.
- If the smoke or CO concentration remains high after the silence period, the alarm will reactivate.
Alarm Signals:
| Condition | Audible Signal | LED Indicator |
|---|---|---|
| Smoke Alarm | 3 long beeps, pause, 3 long beeps | Red LED flashes rapidly |
| Carbon Monoxide Alarm | 4 short beeps, pause, 4 short beeps | Red LED flashes rapidly |
| Low Battery Warning | 1 short chirp every 60 seconds | Yellow LED flashes every 60 seconds |
| Malfunction Warning | 2 short chirps every 60 seconds | Yellow LED flashes twice every 60 seconds |
| Normal Operation | Silent | Green LED flashes every 60 seconds |

Image: The alarm's automatic self-check feature, indicating warnings for low battery and malfunction.
Maintenance
Regular maintenance ensures the longevity and proper functioning of your HATHEPHS alarm.
- Weekly Test: Test the alarm weekly as described in the "Operating Instructions" section.
- Monthly Cleaning: Gently vacuum the alarm's cover and vents using a soft brush attachment to remove dust and debris. Do not use cleaning sprays or solvents.
- Do Not Paint: Never paint the alarm. Paint can clog the sensing chambers and prevent the alarm from functioning properly.
- Battery Life: The built-in battery is designed to last 10 years. When the low battery warning sounds, the unit should be replaced.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Alarm does not sound during test. | Unit not activated; battery depleted; malfunction. | Ensure unit is activated (press and hold button for 10s). If activated and still no sound, replace the unit. |
| Alarm chirps once every 60 seconds. | Low battery warning. | The built-in battery is nearing the end of its life. Replace the alarm unit immediately. |
| Alarm chirps twice every 60 seconds. | Malfunction warning. | The unit has detected an internal fault. Replace the alarm unit immediately. |
| False alarms (smoke). | Cooking fumes, steam, dust, high humidity. | Press the silence button. Relocate the alarm if false alarms persist due to environmental factors. Clean the alarm. |
| False alarms (CO). | Chemical fumes, exhaust from vehicles. | Ventilate the area. Relocate the alarm if false alarms persist due to environmental factors. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | CS02 |
| Power Source | Built-in 10-Year Sealed Lithium Battery (3 Volts DC) |
| Sensor Type | Photoelectric (Smoke) & Electrochemical (Carbon Monoxide) |
| Alarm Loudness | > 85 dB at 10 feet (3 meters) |
| Product Dimensions | 4.7" (Diameter) x 1.1" (Height) |
| Item Weight | 11.5 ounces |
| Material | ABS |
| Operating Temperature | 40°F (4.4°C) to 100°F (37.8°C) |
| Operating Humidity | 10% to 95% RH, non-condensing |

Image: The ultra-thin design of the alarm, showing its compact dimensions.
Warranty and Support
For warranty information or technical support, please contact HATHEPHS customer service. Refer to the product packaging or the official HATHEPHS website for contact details.
Website: HATHEPHS Official Store on Amazon
Please have your model number (CS02) and purchase date available when contacting support.