MOES CO Smoke Gas Detector Alarm User Manual

1. Product Introduction

The MOES NA503F is a versatile detection and alarm device designed to monitor carbon monoxide (CO), combustible gases, and smoke, depending on the specific model. It also features integrated temperature and humidity sensors. With its replaceable plug design, it offers easy installation and true plug-and-play convenience. A built-in emergency backup battery ensures continuous monitoring and alarm functions during power outages. When hazardous levels of CO, combustible gases, or smoke are detected, the device triggers a high-decibel audible alarm and a flashing visual warning, serving as a constant guardian for safety in homes and specialized environments.

Note: The product is available in EU and US plug versions. Each plug version comes in 4 models, and the types of gases detected vary by model. Please confirm the model before purchase.

Figure 1: Product overview showing CO, Combustible Gas & Smoke Detector with Temperature and Humidity display.

Available Models:

• CO Detector
• CO & Combustible Gas Detector
• CO & Smoke Detector
• CO & Combustible Gas & Smoke Detector

Figure 2: Visual representation of the four different detector models and their screen displays.

2. Setup and Installation

The MOES detector is designed for easy, plug-and-play installation. Simply plug the device into a standard wall socket in your desired location.

2.1 Detachable Plug

The device features a detachable plug, allowing for flexibility in installation and portability. The plug can be removed from the detector, making it convenient to relocate the unit as needed.

Figure 3: The detector with its detachable plug.

2.2 Power Supply

The detector operates via a direct plug-in to a power socket. It includes a built-in 1000mAh battery for temporary power supply, ensuring continuous operation during power outages.

Figure 4: Built-in battery for temporary power supply during power cuts.

2.3 Applicable Environments

The detector is suitable for various indoor environments where CO, combustible gases, or smoke may accumulate. Recommended locations include:

• Kitchens (near gas stoves)
• Bedrooms
• Garages (vehicle exhaust areas)
• Basements
• Near gas water heaters or fireplaces
• Near heating units

Figure 5: Applicable scenes for detector placement.

Figure 6: Examples of environments where the detector can be used.

3. Operating Instructions

3.1 Device Screen and Button Features

The device features an LED display that clearly shows CO value, temperature, humidity, and other relevant information. It has intuitive buttons for control and adjustment.

Figure 7: Front view of the device with labeled screen elements and buttons.

Key Screen Elements:

• CO Value: Displays current Carbon Monoxide concentration in PPM.
• Temp Value: Displays current ambient temperature.
• Hum Value: Displays current ambient humidity.
• Indicator Light: Changes color (Green, Yellow, Red) based on detection levels.
• Smoke Sign: (For CO & Smoke / CO & Gas & Smoke models) Indicates smoke detection.
• GAS Sensitivity: (For CO & Combustible Gas / CO & Gas & Smoke models) Displays sensitivity level (S1 for low, S2 for high).

3.2 Button Functions

• Power/Self-Test Button (Short Press):
  • Powers the device on/off when operating on battery power (cannot be shut down when plugged in).
  • Initiates a self-test when the device is plugged in.
• Mute ON/OFF Button (Short Press):
  • Temporarily mutes the buzzer during a yellow alert cycle. The buzzer will reactivate if the concentration returns to green and then re-enters the yellow range.
• Mute ON/OFF Button (Long Press):
  • Unmutes the device. Note: The red alarm cannot be turned off.
• Brightness/GAS Sensitivity Adjustment Button (Short Press):
  • Adjusts screen brightness through three levels: 100%, 50%, and 0% (screen off).
• Brightness/GAS Sensitivity Adjustment Button (Long Press):
  • Switches GAS sensitivity. Default is S1 (low sensitivity) for CH4. S2 (high sensitivity) is for butane, alcohol, and other combustible gases.

Figure 8: Adjustable brightness levels (0%, 50%, 100%).

3.3 Three-Level Indicator Light Guide

The device uses a multi-color indicator light to visually communicate the detected levels:

• Green Breathing (Safe Level):
  • CO concentration: 0-49 ppm.
  • Combustible gas concentration: Less than 5% LEL.
  • Indicator: Emerald green breathing light flashes.
  • Alarm: No audible alarm.
• Yellow Breathing (Danger Level):
  • CO concentration: 50-99 ppm OR Combustible gas concentration: Greater than or equal to 5% LEL and less than 15% LEL.
  • Indicator: Yellow breathing light flashes.
  • Alarm: Audible alarm.
• Red Alarm (Alarm Level - Cannot Be Turned Off):
  • CO concentration: More than 99 ppm OR Combustible gas concentration: Greater than or equal to 15% LEL.
  • Indicator: Red breathing light flashes.
  • Alarm: Continuous audible alarm (cannot be muted).

Figure 9: Three-level indicator light guide for safety, danger, and alarm levels.

Figure 10: Electrochemical detection technology thresholds for CO, combustible gas, and smoke.

4. Maintenance

To ensure optimal performance and longevity of your MOES detector, regular maintenance is recommended. This includes:

• Regular Testing: Perform self-tests periodically to ensure the alarm functions correctly.
• Keep Unobstructed: Ensure the device's ventilation openings are not blocked by dust or other objects.
• Cleanliness: Gently wipe the exterior of the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
• Ventilation: Ensure the installation area is well-ventilated.

Note: The warranty does not cover maintenance operations specified in the user manual; users are responsible for performing these tasks themselves.

5. Troubleshooting

5.1 General Issues

• Device not powering on: Ensure it is properly plugged into a live socket or that the internal battery is charged.
• False alarms: Ensure the device is not placed near sources of high concentration of gases (e.g., strong cleaning agents, aerosols) or in areas with extreme temperature/humidity fluctuations.
• Alarm sounds: If the alarm sounds, immediately evacuate the area. Do not use electrical switches or open flames. Call emergency services from a safe location.

5.2 Important Warnings

Warning! Improper use may cause electric shock, injury, or damage. Consult a licensed electrician if in doubt. This device is for reference only and not a substitute for professional judgment.

5.3 Further Assistance

If you encounter persistent problems with installation or operation, please review the product data sheet available at: https://www.moestech.com/blogs/news/s03-cg

For additional support, you may contact after-sale service at: service@moeshouse.com

6. User Tips

• Initial Setup: After powering on, the combustible gas sensor requires approximately 30 seconds to preheat before normal monitoring begins.
• Temperature Calibration: Each time external power is connected, the internal temperature sensor requires a 30-minute calibration due to preheating effects from the gas detector on temperature measurement.
• Red Alarm Behavior: During a red alarm (Level 3), brightness cannot be adjusted, the alarm cannot be muted, and the screen cannot be turned off. The screen will automatically switch to 100% brightness.
• Screen Off Mode: When the screen is off (0% brightness), the RGB indicator light will still flash at a low frequency to indicate operational status.
• Regular Checks: Always ensure the device is well-ventilated, powered, and unobstructed. Perform regular self-tests.

7. Specifications

7.1 Model-Specific Specifications

CO Detector:

• Carbon Monoxide: 0~999PPM (±10%)
• CO Alarm Threshold: 49 PPM (Initial Default)
• Temperature Measurement Range: -10°C~50°C (±1.5°C) / 14°F~122°F (±2.7°F)
• Humidity Measurement Range: 0%–95% RH (±5%), non-condensing

CO-Smoke Detector:

• Carbon Monoxide: 0~999 ppm (±10%)
• CO Alarm Threshold: 49 ppm (Initial Default)
• Humidity: 0%~95% RH (±5%), non-condensing
• Smoke sensor: Photoelectric

CO-Gas Detector:

• Carbon Monoxide: 0~999 ppm (±10%)
• CO Alarm Threshold: 49 ppm (Initial Default)
• Humidity Measurement Range: 0%–95% RH (±5%), non-condensing
• Combustible Gas Level: GAS Lv1-3 (Lv3: ≥15% LEL)
• Gas Alarm Threshold: GAS Lv2 (≥5% LEL)

CO-Gas-Smoke Detector:

• Carbon Monoxide: 0~999 ppm (±10%)
• CO Alarm Threshold: 49 ppm (Initial Default)
• Humidity Measurement Range: 0%–95% RH (±5%), non-condensing
• Combustible Gas Level: GAS Lv1-3 (Lv3: ≥15% LEL)
• Gas Alarm Threshold: GAS Lv2 (≥5% LEL)
• Smoke alarm threshold: ≥ 0.15 dB/m

7.2 Packing List

• NA503F Detector x1
• User Manual x1
• Plug x1
• Packaging Lining x1

Figure 11: Dimensions of the MOES NA503F Detector.

8. Warranty and Support

8.1 Warranty Instructions

Products are covered by a 24-month warranty, effective from the date of purchase by a retail customer. To exercise warranty rights, the purchaser must present the warranty card and proof of purchase (VAT invoice, financial receipt, or other document confirming the actual date of purchase).

If product quality problems occur within 24 months from the date of receipt, please prepare the product and packaging and contact the place of purchase for after-sales maintenance. A maintenance fee may be charged if the product is damaged due to personal reasons.

When returning goods for warranty service, it is recommended to use the original packaging with padding to ensure safe transportation. Defects covered by the warranty will be considered immediately, no later than 14 days from the date of delivery to the Guarantor. Repairs will be completed within a reasonable time, not exceeding 30 days from delivery to the Guarantor, though this may be extended if hard-to-find spare parts are required.

The warranty does NOT cover:

• Mechanical damage caused by the user's fault and product defects resulting from such damage.
• Damage caused by improper use of the product.
• Removal of the warranty seal or serial number from the product.
• Actions to eliminate physical defects in the product outside of authorized service.
• Use of non-original parts and consumables.
• Performance of maintenance and similar operations specified in the user manual, which users are obliged to do themselves.
• Defects occurring due to natural wear and tear during use.

8.2 Declaration of Conformity

WENZHOU NOVA NEW ENERGY CO.,LTD declares that the equipment type NA503F is in compliance with Directives 2014/35/EU, 2014/30/EU, and 2011/65/EU. The full text of the EU declaration of conformity is available at: https://www.moestech.com/blogs/news/s03-cg

8.3 FCC Compliance Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference; and (2) This device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

If this equipment does cause harmful interference to radio or television reception, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions to ensure RF exposure compliance. This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter.

8.4 Recycling Information

All products marked with the symbol for separate collection of waste electrical and electronic equipment (WEEE Directive 2012/19 / EU) must be disposed of separately from unsorted municipal waste. To protect your health and the environment, this equipment must be disposed of at designated collection points for electrical and electronic equipment designated by the government or local authorities. Correct disposal and recycling will help prevent potential negative consequences for the environment and human health. To find out where these collection points are and how they work, contact the installer or your local authority.

8.5 Manufacturer and Contact Information

• Manufacturer: WENZHOU NOVA NEW ENERGY CO.,LTD
  Address: Power Science and Technology Innovation Center, NO.238, Wei 11 Road, Yueqing Economic Development Zone, Yueqing, Zhejiang, China
  Tel: +86-577-57186815
• After-sale Service Email: service@moeshouse.com
• EU Representative: EVATOST CONSULTING LTD
  Address: Suite 11, First Floor, Moy Road Business Centre, Taffs Well, Cardiff, Wales, CF15 7QR
  Tel: +44-292-1680945
  Email: contact@evatmaster.com
• UK Representative: AMZLAB GmbH
  Address: Laubenhof 23, ESSEN 45326
  Email: info@amz-lab.de
  Tel: +491745298066

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