1. Introduction
The Yoidesu HT-M2 Digital Handheld Microwave Leakage Detector is designed to measure microwave radiation levels. This device provides a digital LCD display for clear readings, along with audible and visual alarms to indicate potentially unsafe radiation levels. It is a portable and reliable tool for checking microwave ovens and other microwave-emitting devices.
2. Safety Information
WARNING: This is NOT a personal safety device. It is intended for detection and measurement purposes only. Do not rely on this device for personal protection against microwave radiation.
- Read all instructions carefully before operating the device.
- Keep the device away from water and extreme temperatures.
- Do not attempt to open or modify the device, as this may void the warranty and pose safety risks.
- Ensure proper battery installation and replacement as described in this manual.
3. Product Overview
The HT-M2 detector features a compact, ergonomic design for easy handling. It includes a digital LCD with backlight, control buttons, and an integrated sensor for microwave detection.
3.1 Components
- HT-M2 Microwave Leakage Detector
- Carrying Case (optional, may vary by package)
Image 1: Yoidesu HT-M2 Microwave Leakage Detector with its protective carrying case.
3.2 Device Layout and Controls
Image 2: Front and back view of the HT-M2 detector with labeled components.
- Liquid Crystal Display (LCD): Shows measurement readings in mW/cm².
- ZERO Button: Used to zero the device before measurement and activate backlight.
- MAX Button: Displays the maximum detected radiation value.
- Power Button: Turns the device on and off.
- Sensor Head: Located at the top, this is the detection point for microwave radiation.
- Battery Cover: Located on the back for 9V battery access.
- Warning Label: Indicates the device is not for personal safety.
4. Setup
4.1 Battery Installation
The HT-M2 detector requires one 9V battery (NEDA 1604 or IEC 6F22 type), which is not included.
- Locate the battery cover on the back of the device.
- Slide or unclip the battery cover to open the compartment.
- Connect a new 9V battery to the battery clip, ensuring correct polarity.
- Place the battery into the compartment and close the cover securely.
Image 3: Rear view of the detector, highlighting the battery compartment and warning label.
4.2 Powering On/Off
- To turn on the device, press the Power button. The LCD will illuminate and display a reading.
- To turn off the device, press and hold the Power button until the display turns off.
4.3 Zeroing the Device
Before each use, it is recommended to zero the device in an area free from microwave radiation to ensure accurate readings.
- With the device powered on, press the ZERO button.
- The display should show '0.00' mW/cm². If not, repeat the process.
5. Operating Instructions
5.1 Performing a Measurement
- Ensure the device is powered on and zeroed.
- Hold the detector by the handle, keeping your hand away from the sensor head.
- Position the sensor head approximately 5 cm (2 inches) from the surface of the microwave oven or other device you wish to test.
- Slowly move the detector along the seams, door, and viewing window of the microwave oven.
- Observe the reading on the LCD. The unit of measurement is milliwatts per square centimeter (mW/cm²).
Image 4: Proper handling of the detector during a measurement.
5.2 Understanding Readings and Alarms
- Normal Readings: Readings below 5.0 mW/cm² are generally considered safe for microwave ovens.
- Alarm Indication: If the detected radiation level exceeds 5.0 mW/cm², the device will emit an audible beep and a red flashing lamp will activate, indicating a potential leakage.
- MAX Function: Press the MAX button to display the highest radiation value recorded during the current measurement session. Press it again to return to real-time readings.
- Backlight: Press the ZERO button briefly to toggle the LCD backlight on or off for improved visibility in different lighting conditions.
6. Maintenance
6.1 Cleaning
- Wipe the device with a soft, dry cloth.
- Do not use abrasive cleaners or solvents, as these can damage the casing or display.
6.2 Battery Replacement
Replace the 9V battery when the low battery indicator appears on the LCD or if the device fails to power on. Follow the battery installation steps in Section 4.1.
6.3 Storage
- Store the device in its carrying case in a cool, dry place when not in use.
- Remove the battery if the device will not be used for an extended period to prevent leakage and damage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Dead or incorrectly installed battery. | Replace the 9V battery, ensuring correct polarity. |
| Inaccurate or fluctuating readings. | Device not zeroed; interference from other electronic devices; low battery. | Zero the device in a radiation-free area. Move away from other electronics. Replace battery if low. |
| Alarm sounds continuously without microwave source. | Device not zeroed correctly; strong ambient radiation. | Zero the device in a known radiation-free environment. Ensure no other strong RF sources are nearby. |
| LCD display is dim or blank. | Low battery; backlight off. | Replace the 9V battery. Press the ZERO button to toggle backlight. |
8. Specifications
| Feature | Specification |
|---|---|
| Model | HT-M2 |
| Brand | Yoidesu |
| Measurement Range | 0-9.99 mW/cm² |
| Warning Level | 5.0 mW/cm² |
| Frequency Range | 2450 MHz |
| Power Source | 1 x 9V Battery (NEDA 1604, IEC 6F22) |
| Alarm Type | Audible, Visual (Red Flashing Lamp) |
| Display | Digital LCD with Backlight |
| Dimensions (L x W x D) | 5.2" x 2.2" x 1.5" (13.2cm x 5.5cm x 3.7cm) |
| Item Weight | 4.6 ounces (approx. 130g) |
9. Warranty and Support
Yoidesu is committed to providing high-quality products. This device is manufactured to meet strict quality standards. For any questions, technical assistance, or warranty inquiries, please contact the seller or manufacturer directly through your purchase platform. Please retain your proof of purchase for warranty claims.