Jaltest JT2003 | Multimeter
Warranty directly via AsTools
Warranty directly via AsTools
We handle warranty cases ourselves, quickly and without involving the manufacturer. Thanks to our own parts inventory and technical expertise, we can usually assist you immediately. Only in exceptional cases do we still send the product to the supplier.
2 years warranty on all products
2 years warranty on all products
All our products come with a 2-year factory warranty. This ensures you long-lasting quality and service.
Easy returns
Easy returns
You can easily request your return through your account. We will send you the return label by email. Return shipping costs are your responsibility.
Professional customer service
Professional customer service
Our experts are ready to help you quickly and professionally, both online and in our physical store. Questions? Feel free to contact us!
\nThe Jaltest JT2003is the heaviest of the three Jaltest multimeters and the only one withTrue RMS on the front. The housing features the printed IP65 and comes in a sturdy protective rimwith a fold-outstandard and a torch at the top. Below the rotary switch are located four measurement leadsin two rows, marked µA mA, A, COM and the socket for voltage, resistance, capacitance and frequency.\n
\nThe displayshows four digits with AUTO, DC and BL indicators, and below that abeam scale from 0 to 60. In addition to the standard settings, the button LoZ, LPF, a position marked Motor and a combined AC+DC-stand; the button PEAK is part of the same series. The A-bus is printed with 20 A max, the highest current range of the three meters.\n
ADVANTAGES
IMPORTANT POINTS
Application and functionality
The JT2003 is the most robust model of the three and built for work outside the clean workbench: IP65 rating on the housing, a torch and a range of functions that the other two do not have. The list below follows the rotary dial and the buttons above it.
What you can measure with the rotary dial
- AC voltage with LoZ: Position marked LoZ, with low input impedance to prevent ghost voltage.
- Motor mode with low-pass filter: Position marked Motor and LPF.
- DC voltage and AC+DC: Position marked AC+DC, which measures the DC and AC components together.
- Millivolt: Separate position with the symbol for DC and AC voltage.
- Resistance, continuity and diode: Combined on one position.
- Capacitance: Its own position with the capacitor symbol.
- Frequency and duty cycle: Its own position marked Hz%.
- Current in µA, mA and A: Three positions, each with the symbol for DC and AC current.
What the buttons and test leads do
- RANGE: Switches automatic range selection to manual operation.
- MAX MIN: Captures the highest and lowest measured values.
- REL: Sets the current measured value as the zero reference point.
- PEAK: Records brief voltage or current spikes.
- HOLD: Freezes the measured value on the display.
- Display backlight: Dedicated button with an off position marked on the same label.
- Torch: Dedicated button for the lamp located at the top of the instrument.
- SELECT: Switches between combined functions within a mode.
- Bus µA mA: Rated at 600 mA maximum and protected at 1000V maximum.
- Bus A: Rated at 20 A maximum, protected at 1000V maximum, maximum 30 seconds per 15 minutes.
- Buses COM and voltage: Jointly rated at CAT III 1000V and CAT IV 600V.
Difference from other Jaltest multimeters
In the webshop there are three Jaltest multimeters listed under the same name Multimeter. The JT2003 is the most robust model, featuring True RMS, IP65 and the highest current range. Below is how the other two differ.
What you need to measure determines the choice, not the model number. The JT2003 is the only one of the three with an IP rating, a torch and an A terminal up to 20 A.
Jaltest JT2001 | Multimeter (overview):
- Range selection: Fully manual, with all ranges individually selectable via rotary dial.
- Test leads: Three, marked 10A MAX, COM and V mA µA.
- Safety category: CAT II 250V.
- Current: DC only, up to 10 A.
- Special function: NCV, for non-contact voltage detection.
- Display: Three digits, without analogue bar scale.
Jaltest JT2002 | Multimeter (overview):
- Range selection: Automatic, with Autorange displayed on screen.
- Safety category: CAT IV 600V and CAT III 1000V, equivalent to the JT2003.
- Current: Up to 10 A on the 10A terminal, compared to 20 A on the JT2003.
- Special function: Temperature in °C and °F.
- Display: Four digits, without analogue bar scale.
- Included: One type K thermocouple with measurement adapter, but no storage case.
Package contents
- 1x Jaltest JT2003 | Multimeter
- 1x Set of test leads, red and black
- 1x Zipped storage case, black
Technical specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Model | JT2003 |
| Type | Digital multimeter, True RMS |
| Range selection | Automatic, indicated as AUTO on display, manual via RANGE button |
| Test leads | Four leads, marked µA mA, A, COM and the lead for voltage, resistance, capacitance and frequency |
| Dial positions | LoZ, Motor with LPF, AC+DC, mV, resistance with diode and continuity, capacitance, Hz%, and current in µA, mA and A |
| Current types | Direct and alternating current, on the same positions |
| Maximum current range | 20 A on the A lead |
| Safety category | CAT III 1000V and CAT IV 600V |
| Protection rating | IP65, marking on front face |
| Fuses | A lead marked 20 A max, 1000V max and maximum 30 seconds per 15 minutes · µA mA lead marked 600 mA max and 1000V max |
| Display | Four digits with AUTO, DC and BL indicators, and a bar scale from 0 to 60 |
| Buttons | RANGE, MAX MIN, REL, PEAK, HOLD, display backlight, torch and SELECT |
| Weight | 568.5 g |
| Dimensions | 190 x 115 x 280 mm |
| Part number | 50002003 |

To ensure you always have access to the latest software updates and releases for your Jaltest device, it's important that you register the correct distributor.
Only the authorized distributor can perform new software installations and updates. When you designate us as your distributor, we can handle this for you and guarantee that your device stays current and runs smoothly.
How does it work?
-
Download and complete the change form
You can find the form as a PDF file here. -
Send us the completed form
You can easily do this by email to support@astools.eu. -
We'll take care of the rest
With the form, we can notify Jaltest of the change and officially register you as our customer.

