1. Product Introduction
The MOES PTH-24E is a versatile 4-in-1 detector designed to monitor Carbon Monoxide (CO) and combustible gases, while also displaying temperature and humidity. It features a replaceable plug design for easy installation and offers both audible and visual alarms to alert users to hazardous gas concentrations. This device is intended to provide continuous protection and peace of mind in various home and specialized environments.



Package Contents:
- PTH-24E Detector x1
- User Manual x1
- Replaceable Plug x1
2. Setup and Installation
The MOES PTH-24E detector is designed for simple plug-and-play installation, requiring no complex wiring. Its replaceable plug ensures compatibility with various socket types.
Installation Steps:
- Choose a suitable location: Place the detector in an area where CO and combustible gases are likely to accumulate, such as near gas appliances, fireplaces, or in utility rooms. Ensure it is not obstructed by furniture or curtains.
- Select the correct plug: Attach the appropriate replaceable plug for your region to the detector.
- Plug into an outlet: Insert the detector directly into a standard wall outlet. The device will power on automatically.
- Initial self-test: Upon powering on, the device will perform an automatic self-test. Observe the display and indicator lights for normal operation.


Recommended Usage Scenarios:
- Kitchens (near gas stoves)
- Fireplaces and utility rooms
- Boiler rooms
- RV interiors
- Areas with potential car exhaust exposure


3. Operating Instructions
The detector features an intuitive display and control buttons for easy operation.

Key Functions:

- Switching Temperature Unit: Long press the 'U' button to toggle between Celsius (°C) and Fahrenheit (°F).
- Screen Brightness Keys: Short press the brightness button (sun icon) to cycle through three brightness gears: 100%, 50%, and 0%. When brightness is 0%, the breathing light is turned off.
- Self-test: Short press the 'U' button to initiate a self-test.
- Sound On/Off (Mute): Short press the bell icon button to toggle the alarm sound on or off.
- Screen Flip: Long press the bell icon button to flip the screen display 180 degrees.
- GAS Sensitivity Switching: Long press the GAS sensitivity button. Default is S1 (low sensitivity, corresponding to CH4). S2 is high sensitivity (corresponding to butane, alcohol, and other combustible gases).
Light Indication and Alarm Levels:
The device provides four levels of visual and audible alarms based on CO and combustible gas concentrations.

- Green Breathing (Safety):
- CO concentration: 0-50ppm
- Combustible gas concentration: < 5% LEL
- Indicator: Emerald green breathing light flashes, green icon on screen, flashing combustible gas level 1 green light.
- Audible Alarm: None.
- Orange Breathing (Warning/Attention):
- CO concentration: 51-100ppm
- Combustible gas concentration: ≥ 5% LEL and < 8% LEL
- Indicator: Orange breathing light flashes, yellow warning icon on screen, flashing combustible gas level 2 yellow light.
- Audible Alarm: Yes.
- Orange Flash (Danger):
- CO concentration: 101-150ppm
- Combustible gas concentration: ≥ 8% LEL and < 15% LEL
- Indicator: Orange flash light flashes, orange warning icon on screen, flashing combustible gas level 3 orange warning light.
- Audible Alarm: Yes.
- Red Pop-Up (Critical Danger):
- CO concentration: > 150ppm
- Combustible gas concentration: ≥ 15% LEL
- Indicator: Red flash light flashes, red warning icon on screen, red warning light of combustible gas level 4.
- Audible Alarm: Yes.
Important Notes on Alarms:
- The RGB color indicator is linked with screen brightness. When screen brightness is 0%, the RGB color indicator is turned off.
- During Level 2 and 4 alarms, the sound cannot be muted, and the screen cannot be turned off. The screen brightness will go directly from 0% to 100%.
- When the screen is off, the RGB color light flashes at low frequency.
- If both GAS and CO alarms occur simultaneously, the highest alarm level will be displayed (e.g., if CO is Level 2 and GAS is Level 4, the Level 4 alarm will be displayed).

4. Maintenance
General Care:
- Keep the detector clean by wiping it with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Ensure the ventilation openings on the device are not blocked by dust or debris.
- Do not paint the detector, as this can interfere with the sensors.
Sensor Life:
The normal lifespan of the host unit is five years. When the sensor's life is exhausted, the display will show a prompt: “Sensor life has expired!” At this point, the device should be replaced to ensure continued protection.
5. Troubleshooting
If you encounter issues with your MOES PTH-24E detector, please refer to the following general advice. For more detailed troubleshooting, consult the product data sheet available online.
- No display/Device not powering on: Ensure the detector is securely plugged into a functioning power outlet. Check if the outlet has power.
- False alarms: Ensure the detector is not placed near sources of fumes (e.g., cooking fumes, strong cleaning agents) or in areas with high humidity or extreme temperatures that might trigger false readings.
- Alarm sounds continuously: If an alarm sounds, immediately ventilate the area and investigate the source of the gas leak or CO. Do not ignore alarms.
- “Sensor life has expired!” message: This indicates the end of the sensor's operational life. The device needs to be replaced.
For further assistance, you can review the product data sheet at: https://www.moestech.com/blogs/news/s02-cg
6. Specifications
| Feature | Specification |
|---|---|
| Model | PTH-24E |
| Carbon Monoxide Detection Range | 0~999PPM (±10%) |
| CO Sound Alarm Range (Default) | 51 PPM |
| Combustible Gas Detection Levels | GAS Lv1-4 (Lv4 = 15% LEL) |
| GAS Sound Alarm Range | GAS Lv2 ≥ 5% LEL |
| Temperature Measurement Range | -10°C~50°C (±1.5°C) / 14°F~122°F (±2.7°F) |
| Humidity Measurement Range | 0%~95% RH (±5%) |
| Input Voltage | 100-240V 50/60Hz (Replaceable Plug) |
| Screen | 2.0' 320*240 IPS |
| Shell Material | Flame Retardant ABS Plastic |
| Operating Temperature | -10°C~50°C / 14°F~122°F |
| Alarm Function | Yes |
| Product Size (With Plug) | 105mm x 55mm x 52mm |

7. Warranty and Support
Warranty Instructions:
All MOES 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:
- Warranty card
- Proof of purchase (VAT invoice, financial receipt, or other document confirming the actual date of purchase), unless the purchase date is already on the warranty card.
If product quality problems occur within 24 months from the date of receipt, please prepare the product and packaging and contact your place of purchase for after-sales maintenance. If the product is damaged due to personal reasons, a maintenance fee may be charged.
Warranty Exclusions:
The warranty does not cover:
- Mechanical damage caused by user fault and product defects resulting from such damage.
- Damage caused by improper use of the product.
- Performance of maintenance and similar operations specified in the user manual, which users are obliged to do themselves.
- Defects due to natural wear and tear during use.
Rights under the guarantee will expire if:
- The warranty seal is removed from the product.
- The serial number is removed from the product.
- Action is taken to eliminate physical defects in the product outside of authorized service.
- Non-original parts and consumables are used.
Declaration of Conformity:
WENZHOU NOVA NEW ENERGY CO.,LTD declares that the radio equipment type PTH-24E is in compliance with Directives 2014/53/EU, 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/s02-cg
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.
Contact Information:
- Manufacturer: WENZHOU NOVA NEW ENERGY CO.,LTD
- Manufacturer Address: Power Science and Technology Innovation Center, NO.238, Wei 11 Road, Yueqing Economic Development Zone, Yueqing, Zhejiang, China
- After-sale Service Email: service@moeshouse.com
- EU Representative (AMZLAB GmbH):
Laubenhof 23, ESSEN 45326
Email: info@amz-lab.de
Tel: +491745298066 - UK Representative (EVATOST CONSULTING LTD):
Suite 11, First Floor, Moy Road Business Centre, Taffs Well, Cardiff, Wales, CF15 7QR
Email: contact@evatost.com
Tel: +44-292-1680945
8. User Tips
- Regular Testing: Perform a self-test regularly (e.g., weekly or monthly) to ensure the detector is functioning correctly.
- Good Ventilation: Always maintain good ventilation in areas where gas appliances are used or where CO/combustible gas leaks are a concern. The detector is an alarm, not a substitute for proper ventilation.
- Understand Alarm Levels: Familiarize yourself with the different alarm levels (Green, Orange, Red) and their corresponding gas concentrations to react appropriately to warnings.
- Immediate Action: If an alarm sounds, do not ignore it. Immediately open windows and doors for ventilation, turn off gas appliances if safe to do so, and evacuate the premises if the alarm persists or indicates high danger.
- Placement Matters: Install the detector at an appropriate height and location, away from direct drafts, vents, or areas that might obstruct gas flow to the sensor.
For additional information and support, please refer to the official MOES website or the provided PDF manual: User manual (PDF)






