The UNI-T UT33B+ Digital Multimeter LCD VDC features a compact and lightweight design, an intuitive button layout, comprehensive basic measurement functions, and robust overload protection circuitry, meeting mainstream safety standards. As a benchmark product for civilian and entry-level industrial use, it balances practicality and economy, making it a mainstream choice for home use, beginners, and basic on-site inspections.
Xi'an Mingxi Taida Information Technology Co., Ltd. brings over 12 years of industry expertise to deliver cutting-edge measurement and control solutions.With progressed computerization forms and strict quality control, we guarantee each item meets the most noteworthy guidelines for proficient applications.
The UT33+ series is an economical multimeter series designed for the entry-level, consumer, educational, and light-duty industrial markets. The UT33B+ Digital Multimeter LCD VDC is the mainstream basic model in this series, with simplified and practical functions and an affordable price. It is mainly designed for home repairs, beginner electricians, plumbing and electrical installations, and school training. It is also a very popular entry-level multimeter model on the market.
To meet the needs of ordinary households, novice repairmen, train electricians, and vocational school training classes, the market requires a basic multimeter that is affordable, easy to operate, robust, and reliable. Traditional pointer multimeters are cumbersome to read and have low accuracy, while ordinary off-brand instruments are easily damaged due to poor protection. UNI-T, leveraging its mature instrument manufacturing technology, has upgraded and optimized the classic UT33 series, launching the UT33B+. This UT33B+ simplifies complex functions, enhances basic measurements and safety protection, and balances cost, performance, and durability, filling the market demand for an affordable and reliable entry-level digital multimeter.
• DC Voltage (DCV): Measures DC voltage from batteries, DC power supplies, control circuits, etc
•AC Voltage (ACV): Measures household AC mains voltage and industrial AC circuit voltage; a core function for everyday power testing
•DC Current (DCA): Detects the operating current of small DC circuits
•Resistance Measurement (Ω): Measures resistance values and circuit impedance to determine the condition of components
•Continuity/Bubble Test: Quickly detects circuit continuity and wire breaks; a buzzer indicates continuity, eliminating the need to constantly monitor the screen
•Diode Test: Tests the forward/reverse characteristics of diodes and transistors' PN junctions to determine the proper functioning of semiconductor components
Auxiliary Functions
•Data Hold: Locks the current measurement value for easy reading and recording from a distance
•Backlit Display: The screen backlight illuminates, suitable for low-light working environments such as electrical boxes, cabinets, and nighttime operations
•Automatic Power Off: Automatically shuts off power after prolonged inactivity to prevent unnecessary battery drain
•Low Battery Indicator: Displays a low battery symbol on the screen to remind you to replace the battery
| Item | Parameter |
| Display Type | 3.5-digit digital LCD screen |
| Max Counts | 1999 |
| Range Mode | Automatic zeroing, fixed range |
| Security level | CAT II 600V |
| Power Supply | Stacked batteries |
| Dimension | Approx. 126×70×34 mm |
| Total weight | Approx. 180g ( including battery ) |
| Work Temperature | 0℃ ~ 40℃ |
| Storage Temperature | -10℃ ~ 50℃ |
| Relative Humidity | ≤75% RH No condensation |
| Shell Material | Flame-retardant ABS engineering plastic |
| Standard Features | Voltage, current, resistance, continuity, diode, backlight, data hold |
Features
Standard operating environment: 23℃±5℃, humidity <75% RH, accuracy format: ±(reading % + number of digits).
DCV
Range: 200mV~600V
Accuracy: ±(0.5% + 2 digits)
Input Impedance: Approx. 10MΩ
ACV
Range: 200V~600V
Frequency Response: 40Hz~400Hz
Accuracy: ±(1.2% + 3 digits)

DCA
Measurement range: 200μA~10A
Accuracy: ±(1.5% + 3 digits)
Maximum measurement time for 10A range: ≤10 seconds per measurement

Resistance
Range: 200Ω~2000kΩ
Accuracy: ±(1.0% + 2 digits)
On/Off Trigger Threshold: <70Ω (Buzzer Alarm)
Diode Testing
Test Voltage: Approximately 2.8V
Forward Voltage Drop Display Range: 0~1.999V
General Parameters
Sampling Rate: Approximately 2 times/second
Automatic Power-Off Delay: Approximately 15 minutes
The UT33B+ Digital Multimeter LCD VDC is a purely offline handheld instrument. It has no built-in programs, requires no computer connection, no accompanying host computer software, no drivers, and no app. It can be used independently right out of the box, with zero learning curve.
Key Usage Tips
✅Strictly adhere to safety operating procedures when measuring high voltage and high current
✅Always disconnect the power supply to the circuit being tested before switching ranges
✅Do not perform continuous measurements for extended periods using the 10A high current range
We get it that standard arrangements do not continuously meet one of a kind prerequisites. Our experienced building group gives comprehensive OEM/ODM customization administrations. Whether you require adjusted recurrence ranges, specialized activating alternatives, or custom frame components, we work closely with you to create the idealize arrangement. Our adaptable plan approach guarantees your particular application needs are completely tended to whereas keeping up our quality standards.

Proven Encounter: Over 12 a long time of specialized skill in estimation and control frameworks development.
Expert Designing: Our gifted R&D group ceaselessly innovates to convey cutting-edge arrangements that keep you ahead of industry demands.
Quality Confirmation: Strict fabricating forms and comprehensive testing conventions guarantee dependable, steady performance.
Comprehensive Back: From starting meeting through progressing support, our committed group gives responsive specialized assistance.
Secure Conveyance: Collaborating with trusted coordinations suppliers guarantees secure, followed, and safety net provider shipment of your equipment.
Customer Center: We prioritize your victory with standard follow-ups, fast issue determination, and personalized benefit approaches.


✅Do not use the device if the device or test leads appear damaged or ifyou suspect that the device is not operating properly.Pay particularattention to the insulation layers
✅If the test leads are damaged,it must be replaced with one of the sametype or the same electrical specification
✅When measuring,do not touch exposed wires,connectors,unused inputs,or the circuit being measured
✅When measuring the voltage higher than 60 VDC or 36 VACrms,keepyour fingers behind the finger guard on the test lead in order to preventelectric shock
✅Do not use or store the device in high temperature,high humidity,flammable,explosive or strong magnetic field environments
✅Do not change the internal circuit of the device in order to avoid the damageto the device and users
✅Do not measure voltage over 600Vrms,or it may expose users to electricshock and damage the device.If the range of the voltage to be measured isunknown,select the maximum range and reduce accordingly
✅If the resistance when probes are shorted is more than 0.5Ω,please checkif test leads are loosened or damaged
✅If the resistor is open or ove the range,the "OL"symbol will be displayed onthe screen
✅Please replace the fuse with the same type.10A jack:Fuse 10A/250Vφ5×20mmVQmA jack:Fuse 0.2A/250V φ5×20mm
✅To ensure accuracy,operating temperature should be within 18℃~28℃.Temperature Coefficient=0.1*(specified accuracy)/℃(<18℃ or>28℃)

If you are looking for an affordable excellent choice. As the UT33B+ Digital Multimeter LCD VDC product line, the UT33B+ Digital Multimeter LCD VDC is a classic entry-level handheld digital multimeter market.It doesn't make you pay for features you don't need, yet it fully meets your requirements in terms of key measurement capabilities.
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