1. Introduction
The Protmex Neptune PTH-28 series is a portable, multifunctional environmental monitor designed to provide real-time data on critical air quality parameters. This device is an essential companion for outdoor activities like camping and hiking, as well as for ensuring safety in indoor environments such as homes and workplaces. It accurately measures Carbon Monoxide (CO), Carbon Dioxide (CO2), Ultraviolet (UV) radiation, temperature, and humidity.
This manual provides detailed instructions for the setup, operation, and maintenance of your PTH-28 series device. Please read it thoroughly before use to ensure proper functionality and safety.
2. Safety Information
- Do not expose the device to extreme temperatures or direct sunlight for prolonged periods.
- Keep the device away from water and moisture, unless specifically designed for water resistance (PTH-28B).
- Do not attempt to open or repair the device yourself. Refer to qualified service personnel.
- Ensure proper ventilation when using the device in enclosed spaces, especially during activities that produce CO or CO2.
- The device is a monitoring tool and should not replace professional safety equipment or practices.
3. Getting Started
3.1 Package Contents
Verify that all items are present in your package:
- 1 x Neptune PTH-28 Multifunctional Detector (PTH-28A or PTH-28B model)
- 1 x Type-C Charging Cable
- 1 x User Manual
- 1 x Storage Bag (for PTH-28B)
- 1 x Climbing Carabiner (for PTH-28B)
- 1 x Lanyard Magnet (for PTH-28B)
- 1 x Lanyard (for PTH-28B)
- 1 x Product Color Box
3.2 Device Overview
Familiarize yourself with the main components of your PTH-28 device:
Figure 1: Device Components (Front and Back View)
- Touch Screen: 1.8-inch LCD display for data visualization and interaction.
- Power Button: Used to turn the device on/off.
- Settings Button: Access device settings and menus.
- USB-C Charging Port: For connecting the Type-C charging cable.
- Flashlight: Integrated light source for illumination.
- Flashlight Switch: Button to activate the flashlight.
- Speaker: Emits audible alarms.
- Ventilation Holes: Allow air to reach internal sensors.
- Lanyard Hole: For attaching a lanyard or carabiner.
- Indicators: Visual alerts for different parameters.
3.3 Charging the Device
The PTH-28 series is equipped with a 2100mAh Lithium-ion battery. Before first use, fully charge the device.
- Connect the provided Type-C charging cable to the USB-C charging port on the device.
- Connect the other end of the cable to a 5V 1A USB power adapter (not included).
- The device display will indicate charging status. A full charge can provide up to 72 hours (PTH-28A) or 96 hours (PTH-28B) of standby duration.
Figure 2: USB-C Fast Charging
3.4 Power On/Off
- To Power On: Press and hold the Power Button for a few seconds until the screen illuminates.
- To Power Off: Press and hold the Power Button for a few seconds. A power-off prompt may appear on the screen; confirm to shut down.
4. Operation
4.1 Display Interface
The 1.8-inch LCD touchscreen provides a clear and intuitive display of all monitored parameters. You can navigate through different screens or settings by swiping or tapping the screen.
Figure 3: Main Display and App Connection (PTH-28B)
The main screen typically shows real-time readings for CO, CO2, temperature, humidity, and UV index. Visual indicators and alarms will alert you to potential hazards.
4.2 Monitoring Functions
- Carbon Monoxide (CO) Monitoring: The device continuously monitors CO concentration.
- Carbon Dioxide (CO2) Monitoring: The device monitors CO2 concentration, crucial for indoor air quality and confined spaces.
- UV Radiation Monitoring: Measures the Ultraviolet Index (UVI) to help you assess sun exposure risks.
- Temperature & Humidity: Provides accurate readings for ambient temperature and relative humidity, along with a 'perceived temperature' or 'heat index' for comfort assessment.
Figure 4: Real-time Carbon Monoxide Monitoring
Figure 5: Real-time Carbon Dioxide Monitoring
Figure 6: UV Monitoring System
Figure 7: Temperature and Humidity Monitoring
4.3 Alarm System
The device features an audible buzzer alarm and visual indicators to alert you to unsafe gas levels. Alarm thresholds are pre-set based on safety guidelines:
- Carbon Monoxide Alarm Values:
- Safety: 0-49 ppm
- Warn: 50-99 ppm
- Danger: 100 ppm and above
- Carbon Dioxide Alarm Values:
- Safety: 400-1000 ppm
- Warn: 1001-2000 ppm
- Danger: 2000 ppm and above
When an alarm is triggered, take immediate action to ensure safety, such as evacuating the area or increasing ventilation.
4.4 Flashlight Function
The integrated flashlight provides convenient illumination in dark environments.
- Locate the Flashlight Switch on the device (refer to Figure 1).
- Press the Flashlight Switch to turn the flashlight on or off.
The flashlight emits a soft light with a color temperature between 2900-3100K and a brightness of 130-140 lumens.
Figure 8: Using the Flashlight
4.5 Bluetooth APP Connection (PTH-28B Only)
The PTH-28B model supports Bluetooth 5.0 connectivity with the PROTMEX APP for enhanced functionality.
- Download the PROTMEX APP from your smartphone's app store.
- Ensure Bluetooth is enabled on your smartphone and the PTH-28B device.
- Open the APP and follow the on-screen instructions to pair with your PTH-28B device.
The APP allows for real-time data visualization with trend line charts, customizable device controls, historical records with detailed event logs, and exportable Excel spreadsheets for advanced data analysis. You can also adjust sampling intervals (5/15/30/60min) to optimize performance or battery life.
Figure 9: PROTMEX App Interface
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents. Ensure the ventilation holes are free from dust and debris.
- Battery Care: To prolong battery life, avoid fully discharging the device frequently. If storing for an extended period, charge the battery to approximately 50% and store in a cool, dry place. Recharge every few months to prevent deep discharge.
- Storage: Store the device in a safe place, away from extreme temperatures, humidity, and direct sunlight.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low battery; device malfunction. | Charge the device fully. If problem persists, contact support. |
| Inaccurate readings | Sensor obstruction; device not calibrated (PTH-28B); extreme environmental conditions. | Ensure ventilation holes are clear. For PTH-28B, check app for calibration options. Move to a stable environment. |
| Alarm not sounding | Speaker obstructed; volume too low; alarm settings disabled. | Check speaker for obstructions. Adjust volume in settings. Verify alarm thresholds. |
| Bluetooth connection issues (PTH-28B) | Bluetooth off; device not in pairing mode; app issues. | Ensure Bluetooth is on for both devices. Restart device and app. Re-pair the device via the app. |
7. Specifications
| Parameter | PTH-28A (Neptune Basic) | PTH-28B (Neptune Pro) |
|---|---|---|
| CO Quantity Measurement | 0-1000ppm (Accuracy: ±5ppm or ±10%) | 0-1000ppm (Accuracy: ±5ppm or ±10%) |
| CO2 Range | 400-5000ppm (Accuracy: ±(50ppm + 5% of reading)) | 400-5000ppm (Accuracy: ±(50ppm + 5% of reading)) |
| Temperature Range | -10℃~60℃ (±1℃) / 14℉~122℉ (±2.7℉) | -10℃~60℃ (±1℃) / 14℉~122℉ (±2.7℉) |
| Humidity Range | 0%~95% RH (±5%) | 0%~95% RH (±5%) |
| Screen | 1.8-inch LCD 360*360 touch screen | 1.8-inch LCD 360*360 touch screen |
| Power Source | 2100mAh Lithium-ion Battery / Type-C / 5V 1A | 2100mAh Lithium-ion Battery / Type-C / 5V 1A |
| Charging | Wired charging | Wired charging / Wireless charging |
| Battery Standby | 3 days (72 hours) | 4 days (96 hours) |
| Material | Aluminum alloy + ABS plastic | Aluminum alloy + ABS plastic |
| Working Temperature | -10℃~50℃ / 14℉~122℉ | -10℃~50℃ / 14℉~122℉ |
| Product Size | 79.5mm x 74mm x 30mm | 79.5mm x 74mm x 30mm |
| Weight | 151g | 151g |
| UV Index Range | LV 1-11 | LV 1-11 |
| APP Connection | No | Yes (BLE Bluetooth 5.0) |
| Water Resistant | No | Yes (Splashing water) |
| Glow-in-the-dark paint | Yes | Yes |
| Certifications | CE, FCC, RoHS | CE, FCC, RoHS, U.S. UL Report & Shenzhen Institute of Metrology and Quality Inspection Certification |
Figure 10: Feature Comparison (PTH-28A vs. PTH-28B)
8. User Tips
- Outdoor Camping: Hang the device inside your tent or near your cooking area to monitor CO and CO2 levels, especially when using fuel-burning appliances. The flashlight can be useful at night.
- Cave Exploration: The device's ability to detect CO2 is critical in confined spaces where CO2 can accumulate rapidly. Always monitor levels closely.
- Home Safety: Place the detector in areas where carbon monoxide or carbon dioxide might be a concern, such as kitchens, bedrooms, or garages, to ensure a safe indoor air environment.
- UV Protection: Pay attention to the UV Index readings and take appropriate sun protection measures when the UVI is high.
- App Integration (PTH-28B): Utilize the PROTMEX app to track historical data and analyze trends, which can help identify patterns in air quality over time.
9. Warranty and Support
Your Protmex Neptune PTH-28 series device is covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the documentation included with your purchase or contact the seller directly.
For technical support, troubleshooting assistance, or any questions regarding your device, please contact the Alattin Store customer service. Contact information can typically be found on your purchase receipt or the seller's platform page.
10. Product Video
Watch the official product video for a visual guide on the Protmex Neptune's features and usage:
Video 1: Protmex Neptune Product Overview - This video demonstrates the device's features including compass, temperature/humidity, UV monitoring, flashlight, USB-C charging, and real-time CO/CO2 detection with rapid alarms in outdoor and indoor settings.