TV 455 - Measuring equipment Testboy - Free user manual and instructions
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| Product Type | Measuring equipment (multimeter) |
| Brand | Testboy |
| Model | TV 455 |
| Dimensions (approx.) | 150 x 80 x 30 mm |
| Weight (approx.) | 200 g |
| Power Supply | 9V battery (not included) |
| Measurement Functions | DC/AC voltage, DC/AC current, resistance, continuity, diode test |
| Display | Digital LCD, 4000 counts |
| Safety Rating | CAT III 600V |
| Accessories Included | Test leads, user manual |
| Cleaning and Maintenance | Wipe with a dry, soft cloth; do not use solvents |
| Spare Parts / Repairability | Replaceable test leads; fuse replacement possible |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -10°C to 50°C |
| Humidity | ≤75% non-condensing |
| Standards Compliance | IEC 61010-1 |
| Warranty | 2 years |
Frequently Asked Questions - TV 455 Testboy
How do I measure voltage with the Testboy TV 455?
Turn the dial to the voltage function (V~ for AC, V- for DC). Insert the black lead into COM and red lead into VΩmA. Connect the probes in parallel with the circuit. Read the value on the LCD.
What battery does the TV 455 use and how do I replace it?
It uses a standard 9V battery (6LR61). To replace, remove the battery compartment screw at the back, slide off the cover, and replace the battery. Ensure correct polarity.
Why is my multimeter not turning on?
First, check if the battery is properly installed and has charge. If the battery is low, the display may dim or not turn on. Replace the battery if needed.
Can I measure AC current with this device?
Yes, you can measure AC current up to 10A. Turn the dial to the A~ position, insert the red lead into the 10A jack for currents above 400mA, or the VΩmA jack for lower currents. Connect the meter in series with the circuit.
What is the maximum voltage I can measure?
The maximum voltage for the TV 455 is 600V AC or DC. Exceeding this can damage the meter and pose a safety hazard. Always start with a higher range if unsure.
How accurate is the resistance measurement?
Resistance accuracy is typically ±(0.8% of reading + 3 digits). For optimal accuracy, ensure the circuit is de-energized and the component is isolated.
Does the TV 455 have an auto-off feature?
Yes, the device automatically turns off after approximately 15 minutes of inactivity to conserve battery. To wake it, turn the dial off and back on.
Can I test diodes and continuity?
Yes. Set the dial to the diode/continuity position. For continuity, the meter beeps if the resistance is below ~30Ω. For diodes, the display shows the forward voltage drop.
What safety precautions should I take?
Always use the proper input jacks and function settings. Do not measure voltages above 600V. Inspect test leads for damage before use. Follow CAT III safety guidelines.
How do I clean and store the multimeter?
Clean the casing with a dry, lint-free cloth. Do not use abrasive cleaners or solvents. Store in a cool, dry place away from direct sunlight and extreme temperatures.
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USER MANUAL TV 455 Testboy
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Product information
Brand : Testboy
Model : TV 455
Category : Measuring equipment