UT285C - Measuring equipment Uni-T - Free user manual and instructions
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| Type of Product | Non-Contact Voltage Tester |
| Brand | Uni-T |
| Model | UT285C |
| Measurement Range | 12V to 1000V AC |
| Frequency | 50/60 Hz |
| Display | LED and audible alarm |
| Detection Method | Non-contact (capacitive) |
| CAT Rating | CAT IV 1000V |
| Power Supply | 2 x AAA batteries (1.5V) |
| Auto Power Off | Yes, after 5 minutes of inactivity |
| Low Battery Indication | LED indication |
| Dimensions | Approx. 150 x 25 x 25 mm |
| Weight | Approx. 50 g (without batteries) |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -10°C to 50°C |
| Safety Standards | IEC 61010-1, EN 61326-1 |
| Protection Class | IP40 |
| Main Functions | Voltage detection, phase identification, breakpoint detection |
| Cleaning | Wipe with a dry, soft cloth. Do not use solvents. |
| Battery Replacement | Open battery compartment, insert 2 x AAA batteries with correct polarity. |
| Repairability | Refer to authorized service center for repairs. No user-serviceable parts inside. |
Frequently Asked Questions - UT285C Uni-T
What is the Uni-T UT285C?
The Uni-T UT285C is a non-contact voltage tester designed to detect AC voltage from 12V to 1000V without touching live conductors.
How do I turn on the UT285C?
Insert two AAA batteries with correct polarity and press the power button. The device will perform a self-test and be ready for use.
What does the LED and beep indicate?
The LED lights up and the beeper sounds when AC voltage is detected. The intensity of the LED and beep increases with higher voltage.
Can the UT285C detect DC voltage?
No, the UT285C is designed to detect AC voltage only. It will not detect DC voltage.
How do I test a live wire with the UT285C?
Bring the tip of the tester close to the wire or insulation. The device will alert via LED and beep if voltage is present. No contact is required.
What is the auto power-off feature?
The UT285C automatically turns off after approximately 5 minutes of inactivity to conserve battery life.
How do I replace the batteries?
Slide open the battery compartment cover at the back, remove old batteries, and insert two new AAA batteries with correct polarity. Close the cover.
Is the UT285C safe to use?
Yes, it is rated CAT IV 1000V for safety. Always follow proper electrical safety procedures and test the device on a known live source first.
What is the detection range?
The detection range is from 12V to 1000V AC at 50/60 Hz. Sensitivity may vary based on wire insulation and environment.
What should I do if the UT285C does not work?
Check batteries, ensure they are fresh and inserted correctly. If still not working, contact Uni-T support or an authorized service center. Do not attempt to open the device.
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USER MANUAL UT285C Uni-T
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Product information
Brand : Uni-T
Model : UT285C
Category : Measuring equipment