NO.
NO. 622B 9999-count TRMS Digital Multimeter Red
Measures 10+ electrical parameters with 9999-count true RMS accuracy and anti-burn protection
- Analog/DigitalAnalog
- Color/FinishRed
- Selling UnitEach
- TypeDigital Multimeters
- 9999-count true RMS delivers precise AC/DC voltage, current, resistance and frequency readings
- Large colour LCD with analog bar and built-in flashlight ensures clear visibility in any light
- Pocket-sized body with auto sleep extends battery life for field and garage work
- Dual fuses provide anti-burn and overload protection for safe, reliable operation
- Smart auto-ranging mode simplifies measurements for beginners and DIY enthusiasts
9999-Count True RMS Multimeter
The NO. 622B is a compact digital multimeter with 9999-count true RMS resolution for accurate AC and DC voltage, current, resistance, frequency, capacitance, diode, continuity and temperature readings. It suits electricians, technicians and DIY users who need a single handheld tool for industrial panels and household circuits. The smart auto-ranging function selects the correct scale automatically, reducing setup time for routine checks and fault finding.
Installation and Common Issues
The meter arrives ready to use; insert the supplied battery, connect the test leads to the marked terminals and select the desired function with the rotary switch. Auto-ranging handles scale changes, while the analog bar gives a quick visual trend. Common mistakes include exceeding the rated input limits on current ranges, blowing the internal protection fuses, or forgetting to disconnect power before resistance and continuity tests. The low-battery and fuse-damage indicators alert you before readings become unreliable.
Measurement Capacity and Limits
The 9999-count display provides fine resolution for signals up to the instrument’s maximum rated inputs, covering typical mains voltages, low-voltage electronics and automotive circuits. The true RMS engine ensures accurate AC readings on distorted waveforms found in switching power supplies and motor drives. Headroom runs out when signals exceed the specified voltage, current or frequency limits, at which point the overload protection activates and the display shows an over-range warning.
Highlights
- 9999-count true RMS delivers precise AC/DC voltage, current, resistance and frequency readings
- Large colour LCD with analog bar and built-in flashlight ensures clear visibility in any light
- Pocket-sized body with auto sleep extends battery life for field and garage work
- Dual fuses provide anti-burn and overload protection for safe, reliable operation
- Smart auto-ranging mode simplifies measurements for beginners and DIY enthusiasts
Specifications
| Analog/Digital | Analog |
|---|---|
| Color/Finish | Red |
| Selling Unit | Each |
| Type | Digital Multimeters |
Questions about this item
How do I confirm the 9999-count true RMS readings are working correctly after setup?
The large colour LCD shows an analog bar, real-time temperature, low-battery alert and damaged-fuse alert so you can verify each measurement instantly
What comes in the box with the 622B and what must I buy separately?
The unit includes the multimeter body; test leads, temperature probe and batteries are not included and must be purchased separately
Which version of the 622B should I choose for the 9999-count true RMS capability?
The 622B model provides the 9999-count true RMS specification across AC/DC voltage, current, resistance, frequency, duty cycle, capacitance, continuity, diode and temperature measurements
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