YOJOCK HT60
YOJOCK HT60 Gas Leak Detector User Manual
Model: HT60
1. Introduction
Welcome to the user manual for your YOJOCK HT60 Gas Leak Detector. This device is designed to provide reliable and accurate detection of various flammable gases, ensuring safety in your home, RV, caravan, or workplace. Please read this manual thoroughly before operating the device to ensure proper use and to maximize its lifespan.

Figure 1: YOJOCK HT60 Gas Leak Detector with included batteries.
2. Product Features
- Versatile Gas Detection: Detects LPG, methane, propane, natural gas, ethane, gasoline, and coal gas.
- Rapid Response: Provides visual and audible alarms within 0.5 seconds of gas detection.
- Dual Alarm System: Features both visual (LCD screen turns red) and audible (75dB) alerts.
- Adjustable Sensitivity: Offers high (50-500 PPM) and low (500-1000 PPM) sensitivity modes for precise leak pinpointing or general area scanning.
- Easy Operation: Simple setup with included AAA batteries and a quick 30-second preheating time.
- Battery Indicator: Displays remaining battery charge on the LCD screen.
- Automatic Shut-Off: Powers off automatically after 5 minutes of inactivity to conserve battery.
- Compact and Portable: Pocket-sized design with a pen hook for easy carrying and storage.
- Durable Design: Features a non-slip grip for comfortable and secure handling.

Figure 2: High-precision sensors and detection capabilities.

Figure 3: Audible and visual alarm system.
3. Package Contents
Verify that all items listed below are present in your package:
- 1 x YOJOCK HT60 Gas Leak Detector
- 2 x AAA Batteries (included)
- 1 x Storage Pouch
- 1 x User Manual (available in English, German, Italian, French, and Spanish)

Figure 4: Items included in the package.
4. Important Safety Information
- This device is designed to detect flammable gases. It is not a substitute for proper ventilation or professional gas leak inspection.
- Do not expose the device to extreme temperatures, high humidity, or direct sunlight.
- Keep the device away from water and other liquids.
- Do not attempt to disassemble or modify the device. This will void the warranty.
- Replace batteries promptly when the low battery indicator appears to ensure accurate readings.
- Always follow local safety regulations and guidelines when dealing with gas appliances and systems.
5. Setup
5.1 Battery Installation
- Locate the battery compartment cover on the back of the device.
- Open the cover and insert the two AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
5.2 Initial Power On
Press and hold the power button (red button) for approximately 2 seconds to turn on the device. The device will enter a preheating phase.
6. Operation
6.1 Preheating
After powering on, the detector requires approximately 30 seconds to preheat. During this time, the display may show a countdown or a warming-up indicator. Wait until the preheating is complete before proceeding with detection.
6.2 Selecting Sensitivity Mode
The HT60 offers two sensitivity modes:
- High Sensitivity Mode: Detects gas concentrations between 50-500 PPM. Ideal for pinpointing small leaks.
- Low Sensitivity Mode: Detects gas concentrations between 500-1000 PPM. Suitable for general area scanning.
Press the 'S' button (green button) to toggle between high and low sensitivity modes. The current mode will be indicated on the LCD display.
6.3 Gas Detection
Once preheating is complete, hold the detector with the sensor tip close to the area where a gas leak is suspected (e.g., gas pipes, appliance connections, valves).
Move the sensor tip slowly along the suspected leak path. The optimal detection distance is between 0.4 to 2.0 inches (1-5 cm) from the source.

Figure 5: Detecting a gas leak with quick response.

Figure 6: Easy-to-use operation steps.

Figure 7: Detector in use near a gas stove.
6.4 Alarm Indication
If a gas leak is detected:
- The LCD display will turn red.
- An audible alarm will sound. The alarm tone will increase in frequency and volume as the gas concentration rises.
In case of an alarm, immediately ventilate the area, turn off gas sources if safe to do so, and investigate the source of the leak. Do not ignore gas alarms.
6.5 Automatic Shut-Off
The device will automatically power off after 5 minutes of inactivity to conserve battery life. To restart, press and hold the power button.
7. Applications
The YOJOCK HT60 Gas Leak Detector is suitable for a variety of environments:
- Home Kitchens: Checking gas stoves, ovens, and water heaters.
- RV and Caravans: Inspecting propane tanks, lines, and appliances.
- Outdoor Camping: Ensuring safety with portable gas cookers and heaters.
- Workplaces: Detecting leaks in industrial gas lines and equipment.

Figure 8: Various application scenarios for the detector.

Figure 9: Gas tank in an RV.

Figure 10: Industrial gas cylinders.

Figure 11: Industrial piping system.
8. Maintenance
8.1 Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
Keep the sensor tip clean and free from dust or debris to ensure accurate readings.
8.2 Battery Replacement
When the low battery indicator appears on the display, replace both AAA batteries with new ones to maintain optimal performance.
8.3 Storage
Store the device in the included storage pouch in a cool, dry place when not in use. Remove batteries if storing for extended periods.
9. Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Device does not turn on | Dead or incorrectly installed batteries | Replace batteries with new ones, ensuring correct polarity. |
| Inaccurate or inconsistent readings | Dirty sensor, device not fully preheated, incorrect sensitivity mode selected | Clean the sensor tip, wait for the 30-second preheating to complete, adjust sensitivity mode as needed. |
| No alarm when gas is present | Low battery, sensor blocked, gas concentration below detection threshold | Replace batteries, ensure sensor tip is clear, check sensitivity mode. |
| Device turns off unexpectedly | Automatic shut-off activated (5 minutes of inactivity), low battery | Restart the device if it was inactive, replace batteries if low. |
10. Specifications
- Model: HT60
- Detection Gases: LPG, Methane, Propane, Natural Gas, Ethane, Gasoline, Coal Gas
- Sensitivity: High (50-500 PPM), Low (500-1000 PPM)
- Response Time: Approximately 0.5 seconds
- Preheating Time: Approximately 30 seconds
- Alarm: Visual (LCD turns red) & Audible (75dB)
- Power Source: 2 x AAA Batteries (included)
- Automatic Shut-off: After 5 minutes of inactivity
- Product Dimensions (L x W x H): 16.5 x 2.1 x 2.1 cm (6.5 x 0.8 x 0.8 inches)
- Weight: 60 grams (2.1 ounces)
- Color: Red
- Manufacturer: YOJOCK
- Country of Origin: China
11. Warranty and Customer Support
YOJOCK offers 36 months of customer service and lifetime technical support for the HT60 Gas Leak Detector.
For any questions, issues, or technical assistance, please contact YOJOCK customer support through your purchase platform or refer to the contact information provided in the original packaging.
Please retain your proof of purchase for warranty claims.
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