● 17 min readShowdown: Uno R4 vs Uno R3 vs Nano
Welcome to Vol. 12 of The Probots Showdown. Three boards. Three price points. Three very different futures for your project.Should you stick with the
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Ultra-compact smart multimeter with a 4000-count EBTN display, True RMS, NCV detection, and automatic measurement identification for effortless electrical testing.
Effortless electrical diagnostics in a pocket-sized package. The UNI-T UT123D is engineered to simplify measurement tasks with its integrated smart chip technology. Unlike traditional meters that require manual dial rotation for every function, the UT123D automatically identifies whether you are measuring voltage, resistance, or continuity, significantly reducing the learning curve for new users while speeding up workflow for professionals.
Advanced Visual and Analytical Power The device features a high-contrast EBTN display, which offers a wide viewing angle and superior visibility compared to standard LCDs, making it perfect for use in dimly lit electrical cabinets. Despite its small size, it utilizes True RMS measurement, ensuring accuracy when testing non-linear AC loads. For added safety, the meter includes a built-in Non-Contact Voltage (NCV) detector with a multi-segment signal strength indicator.
Display Count: 4000 Counts
Measurement Type: True RMS
DC Voltage Range: 0.6V to 600V
AC Voltage Range: 0.6V to 600V
Current Range: 1mA to 10A (AC/DC)
Resistance Range: 0.1 Ohm to 40 MOhm
Capacitance Range: 1nF to 4000 uF
Safety Rating: CAT III 600V
Special Functions: NCV/Live Detection, Temperature (Celsius/Fahrenheit), Continuity/Diode Test, Data Hold
Household Maintenance: Rapidly checking wall outlets, batteries, and appliance power cords using the smart auto-detection mode.
HVAC Troubleshooting: Measuring system temperatures and motor capacitors using the dedicated thermal and capacitance ranges.
Automotive Electronics: Testing 12V/24V systems and checking wire continuity in vehicle harnesses.
Unlock New Capabilities (Project Evolution)
Safety Upgrade: Utilize the Live Wire detection and NCV features to verify safe working conditions before touching any wires or terminals.
Smart Efficiency: Transition from slow, manual-dial multimeters to this automated smart meter to cut down on diagnostic time during multi-point inspections.
Downloads:
Package Includes:
1 x UNI-T UT123D Smart Digital Multimeter
1 x Pair of High-Quality Test Leads
1 x Operating Manual
What makes this a "Smart" multimeter? It automatically identifies measurement modes (Voltage, Resistance, Continuity) without needing to manually turn a dial for each function.
Can I manually select a function if needed? Yes, the "Power/Mode" button allows you to override the smart mode for specific manual selections.
What is the benefit of an EBTN display? It features high contrast (white digits on a black background) and a wide viewing angle, making it much easier to read in dark areas.
How do I use the NCV feature? Move the top of the meter near a potential AC source; the meter will signal voltage presence with an audible buzzer and a multi-level visual bar.
Is it a True RMS meter? Yes, it uses True RMS to provide accurate readings on non-linear or distorted AC waveforms.
Does it measure temperature? Yes, it includes temperature measurement capabilities for both Celsius and Fahrenheit ranges.
What batteries does it require? It uses 2x standard 1.5V AAA batteries.
What is the maximum voltage it can measure? It is rated for up to 600V AC or DC.
Can it measure capacitance? Yes, it has a capacitance range of 1nF up to 4000 uF.
What is the current limit? It is fused for current measurements up to 10A.
Does it have a continuity buzzer? Yes, it provides audible feedback (typically below 30 Ohms) for quick wire testing.
Is it safe for home electrical work? Yes, it carries a professional CAT III 600V safety rating.
How do I identify a live wire? The meter features a dedicated "Live" mode that allows you to distinguish live wires from neutral using a single test lead.
What is the update speed of the display? The 4000-count display updates approximately 3 times per second.
Does it have an auto-power off? Yes, it includes an auto-off feature to conserve battery life after periods of inactivity.
How do I freeze a reading? Press the "HOLD" button to lock the current measurement on the screen.
Can I measure diodes? Yes, the meter includes a dedicated diode test function.
What gauge wire fits the test lead terminals? Standard 2.54mm pin-compatible or standard multimeter probes are ideal.
What color is the housing? It features the signature professional UNI-T red and black rugged housing.
Is this suitable for beginner hobbyists? Absolutely; its automated features make it one of the most user-friendly meters for students and hobbyists.
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Probots sells every Electronics Part for your next Project. You can order 10,000+ Electronic Parts Online - Arduino, Raspberry Pi, NodeMCU Development Boards, Sensors, Motors, Motor Drivers, SMPS, Plastic Enclosures etc in India directly on probots.co.in
We offer specialized services for Bulk, Wholesale & B2B Customers like discounted prices, additional shipping options, customised products, etc . Customer with large quantity & regular orders qualify for the specialised discounted rates.
We also offer dedicated sales team to assist you with the order process by providing sales quotations, PI, technical support for choosing products, etc.
Note: Business Orders are processed manually and usually take 1-3 days to process compared to placing the order directly on our website. Please plan your purchases accordingly.
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