1. Introduction
1.1 Product Overview
The Pro'sKit MT-4615 Anemometer is a professional tool designed for measuring air velocity and air volume. It features a large LCD with backlight for clear readings in various lighting conditions. This device offers multiple measurement units and includes functions such as Max/Min value display, low battery indication, auto power off, and data hold for convenient use.

Image 1.1: The Pro'sKit MT-4615 Anemometer shown with its retail packaging and protective carrying pouch.
2. Safety Information
Please read all safety instructions before operating the device. Failure to follow these instructions may result in electric shock, fire, or personal injury.
- Do not operate the device in explosive atmospheres or in the presence of flammable gases or fumes.
- Keep the device away from water and moisture.
- Do not attempt to open or modify the device. Refer all servicing to qualified personnel.
- Ensure proper battery installation and replacement.
- Avoid direct exposure of the impeller to strong impacts or excessive force.
3. Product Components
Familiarize yourself with the main parts of your MT-4615 Anemometer:
- Impeller: Rotates to measure air flow.
- LCD Display: Shows measurement readings, units, and function indicators.
- Function (FUNC) Button: Used to select measurement modes (e.g., air velocity, air volume).
- Hold Button: Freezes the current reading on the display.
- Max/Min Button: Toggles between maximum and minimum recorded values.
- Unit Button: Changes the measurement units.
- Backlight Button: Activates or deactivates the LCD backlight.
- Battery Compartment: Located at the rear for battery installation.

Image 3.1: Front view of the MT-4615 Anemometer, highlighting the LCD display and control buttons.

Image 3.2: Angled view of the MT-4615 Anemometer, showing the impeller and ergonomic design.
4. Setup
4.1 Battery Installation
The MT-4615 Anemometer requires one 9V 6F22 battery (not included) for operation.
- Locate the battery compartment cover on the back of the device.
- Slide or unclip the cover to open the compartment.
- Insert a new 9V 6F22 battery, ensuring correct polarity (+/-).
- Replace the battery compartment cover securely.
Note: A low battery indication (<7V) will appear on the display when the battery needs replacement.
5. Operation
5.1 Power On/Off
To power on the device, press any button. The device will automatically power off after 10 minutes of inactivity to conserve battery life. This auto power-off duration is adjustable.
5.2 Measuring Air Velocity and Air Volume
- Hold the anemometer so that the impeller faces the airflow.
- Ensure the airflow passes directly through the impeller for accurate readings.
- Press the FUNC button to cycle between air velocity and air volume measurement modes.
- The current measurement will be displayed on the LCD.
5.3 Unit Selection
The MT-4615 supports various units for air velocity and air volume measurements.
- Air Velocity Units: m/s, km/h, mil/h, ft/m, ft/s, knots.
- Air Volume Units: CMS (m³/s), CMM (m³/min), CFM (ft³/min).
To change units, press the UNIT button repeatedly until the desired unit is displayed.
5.4 Data Hold Function
To freeze the current reading on the display, press the HOLD button. Press it again to release the hold and resume live measurements.
5.5 Maximum and Minimum Value Display
To view the maximum or minimum recorded values during a measurement session, press the MAX/MIN button. Pressing it repeatedly will cycle through Max, Min, and current readings.
5.6 Backlight Control
The large LCD display features a backlight for improved visibility in low-light conditions. Press the Backlight button (often indicated by a sun icon) to turn the backlight on or off.
6. Maintenance
6.1 Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Keep the impeller free from dust and debris to ensure accurate readings.
6.2 Storage
When not in use for extended periods, remove the battery to prevent leakage. Store the anemometer in its protective pouch in a cool, dry environment, away from direct sunlight and extreme temperatures.
Storage environment: 0~80%RH, -20°C~80°C (no condensation).
7. Troubleshooting
If you encounter issues with your MT-4615 Anemometer, refer to the following common solutions:
- Device does not power on: Check battery installation and ensure the battery has sufficient charge. Replace if necessary.
- Inaccurate readings: Ensure the impeller is clean and unobstructed. Verify that the airflow is directed properly through the impeller. Check for stable operating environment conditions.
- Display is dim or blank: Check battery level. Activate the backlight if in a dark area.
- Buttons are unresponsive: Try removing and reinserting the battery to reset the device.
If the problem persists, contact Pro'sKit customer support.
8. Specifications
The following table details the technical specifications of the Pro'sKit MT-4615 Anemometer:
| Feature | Specification |
|---|---|
| Measuring Range (Air Velocity) | 0.80~40m/s |
| Accuracy (0.80~30.00 m/s) | ±(2.0% + 50D) |
| Resolution | 0.01m/s, 0.01km/h, 0.01 ft/s, 0.01knots, 0.01mile/h, 1ft/m |
| Air Velocity Units | m/s, km/h, mil/h, ft/m, ft/s, knots |
| Air Volume Units | CMS (m³/s), CMM (m³/min), CFM (ft³/min) |
| Sensor | Conventional arm angle to the impeller |
| Sampling Time | 0.4s |
| Auto Power Off | 10 minutes (adjustable) |
| Low Battery Indication | <7V |
| Operation Environment | 0~85%RH, 0°C~40°C (no condensation) |
| Fan Operation Environment | 0~95%RH, -20°C~80°C (no condensation) |
| Storage Environment | 0~80%RH, -20°C~80°C (no condensation) |
| Operating Altitude | Max. 2000m |
| Power Source | 9V 6F22 battery (not included) |
| Weight (w/o battery) | 154 g |
| Dimensions | 170 x 85 x 40mm |
| Accessories | Pouch bag, user manual |

Image 8.1: A visual representation of the MT-4615 Anemometer's technical specifications.
9. Applications
The Pro'sKit MT-4615 Anemometer is suitable for a wide range of applications, including:
- HVAC system installation and maintenance.
- Environmental monitoring.
- Industrial process control.
- Outdoor activities requiring wind speed measurement.

Image 9.1: The anemometer being used outdoors, demonstrating its versatility for various environmental measurements.

Image 9.2: The device in an industrial setting, likely measuring airflow from HVAC systems or ventilation ducts.

Image 9.3: The anemometer positioned on an office desk, indicating its use in professional or analytical environments.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact Prokit's Industries Co.,LTD, the manufacturer of this product.
You can find more information on their official website: www.prokits.com.tw
Manufacturer: Prokit's Industries Co.,LTD
Model Number: EC-MT-4615-C
UPC: 4711552157772