














Model 390B
390B Series
True RMS Handheld Digital Multimeter with Bluetooth
Price: $572 / 3 yr Warranty
Name | Qty | Last Updated | ||
---|---|---|---|---|
FARNELL | 3 | 2025-09-13 | ||
TME | 1 | 2025-09-13 | ||
DIGI-KEY | 10 | 2025-09-13 | ||
DISTRELEC | 3 | 2025-09-13 | ||
SEFRAM | 43 | 2025-09-13 | ||
MOUSER ELECTRONICS | 7 | 2025-09-12 | ||
TESTEQUITY | 3 | 2025-09-12 | ||
RS Europe | 3 | 2025-09-12 | ||
NEWARK | 2 | 2025-09-12 |
Overview
- DCV, ACV, AC+DC, DCI, ACI, resistance, capacitance, frequency, diode, temperature, and continuity measurement functions
- True RMS AC and AC+DC measurements
- Bluetooth connectivity for live data monitoring and logging from a mobile device (Model 390B only)
- Up to 100,000-count, dual display
- dB, dBm, limits, peak-hold, REL (delta), MIN, MAX, and average math functions
- HFR (High Frequency Rejection) mode applies a low pass filter for AC measurements (800 Hz cut-off)
- Isolated USB interface with operating software for remote data logging
- Dirt and water-resistant housing with rubberized protective case
- CAT III 1000 V / CAT IV 600 V protection
Models
Documents
Documentation
Software
Description |
Version |
Download |
---|---|---|
Operating Software
|
1.0.0
|
|
USB Virtual COM Drivers (Supports Windows 10/11)
|
V11.3.0
|
Accessories

AC/DC Clamp Accessory for DMMs
CP 3
- Converts any DMM to a current clamp
- Measures current without disconnecting circuit under test
- Measures to 400A DC/AC
- Outputs 1mV per Amp, operates on 2V range of any DMM
- MSRP: $113

40kV High Voltage DMM Probe
PR 28A
If the voltages you need to measure are above the specifications of the general purpose probe, B+K Precision has higher voltage probes for you.
- 40,000VDC or 20,000Vac Max input voltage
- X1000 Attenuation
- 1000M ohms Input Impedance
- 60Hz Bandwidth
- 48" (1.2m) Cable Length
- MSRP: $122

Red and Black CAT III (IV) 1000V (600V) Test Leads
TL37
Right-angled sheathed banana replacement 10A test leads for digital multimeters.
- MSRP: $15

General Purpose DMM Kit
TL130B
If you need only one basic accessory kit for your meter, this is the one. Attach probes or clips to the sheath plug to complete your test. Soft, flexible silicone leads make movement easy. Kit is voltage and current rated for electronic or electrical applications.
- Probes are 1000 V, CAT III (600 V, CAT IV)
- Alligator clips are 300 V, CAT II 5A
- UL Listed test leads
- Silicone lead wire length 60" (1 m)
- Tri-fold velcro pouch
- MSRP: $100

High Performance Bench DMM Accessory Kit
TL500B
This kit of accessories was assembled to facilitate requirements by high-performance bench digital multimeters (DMM's) users. All the most popular accessories in one kit. The kit offers MiniProbe test probe, with spring-loaded tips, for fine probing; MiniPRO Test Clips for small and MiniFlex Test Clips for micro connections; and for those larger test points, both spade lug and banana plug adapters, two pairs of test leads for 4-wire measurements or calibration hookups, an insulated BNC male to sheathed banana jack adapter, and an insulated SMD Tweezer set for surface-mount component testing.
- Silicone jacketed test lead wire with UL Listing
- MiniProbes w/Spring loaded Stainless Steel Tips
- Packaged in Plastic Case
Kit Contains:
(4) Test Lead 4mm Sheathed P-RaP Silicon 0.75, 40": (2) Black, (2) Red
(2) Spring Tip Mini-Probe-4mm Jack: (1) Black, (1) Red
(1) Insulated BNC male Adapt-4mm Safety Jacks
(2) Adapter 4mm Banana Plug to Jack: (1) Black, (1) Red
(2) Mini Flex Clip-4mm Jack-Silicon 0.40, 10 cm: (1) Black, (1) Red
(2) Adapter 6mm Spade 4mm-Jack: (1) Black, (1) Red
(2) Lead minipro-J-PVC 0.40, 10 cm: (1) Black, (1) Red
(1) Tweezer Test Lead Set- 4mm P, w/PVC pouch
Specifications
Temperature |
-20 to +80 ºC |
RoHS (2002/95/EC) |
Compliant |
- MSRP: $278

Maxi-Pro DMM Kit
TL50B
- Complete accessory kit for all your testing needs.
- Includes soft, flexible silicone lead wire easy movement and Tri-Fold Velcro Pouch for convenient storage.
- 1000 V, CAT III (600 V, CAT IV)
- UL Listed test leads
- Silicone lead wire length 60" (1.5m)
- Tri-fold Velcro Pouch
- MSRP: $133

Current transducer (10 mVAC/1 AAC, 200 A, Ø 15 mm)
SP201
- Jaw opening 15 mm
- Current transducer 200A AC
- Output voltage 10mV AC/1A AC
- Bandwidth 40 Hz to 5 KHz
- Safety : for isolated conductor only
- MSRP: $139

Current transducer (1VDC/10AAC, 25 A, Ø 15 mm)
SP205
- Jaw opening 15 mm
- Transducer clamp with DC output voltage 25A AC
- Out put voltage 1V DC / 10A AC
- Bandwidth 40 Hz to 5 KHz
- Safety : for isolated conductor only
- MSRP: $

Current transducer (1VDC/100AAC, 250 A, Ø 50 mm)
SP215
- Jaw opening 50 mm
- Transducer clamp with DC output voltage 250A AC
- Out put voltage 1V DC / 100A AC
- Bandwidth 40 Hz to 5 KHz
- Safety : for isolated conductor only
- MSRP: $

Current transducer (1 VAC/1 AAC, 5 A, Ø 15 mm)
SP220
- Jaw opening 15 mm
- Current transducer 5A AC
- Out put voltage 1V AC/1A AC
- Bandwidth 40 Hz to 50 Hz
- Safety : for isolated conductor only
- MSRP: $

Current transducer (100 mVAC/1 AAC, 10A, Ø 15 mm)
SP221
- Jaw opening 15 mm
- Current transducer 10A AC
- Output voltage 100mV AC/1A AC
- Bandwidth 40 Hz to 5 KHz
- Safety : for isolated conductor only
- MSRP: $239

Current transducer (1 mVDC/ 1AAC, 1200 A, Ø 50 mm)
SP240
- Jaw opening 50 mm
- Transducer clamp with Dc output voltage 1200A
- Out put voltage 1mV DC / 1 A
- Bandwidth 40 Hz to 5 KHz
- Safety : for isolated conductor only
- MSRP: $

Current transducer (1 mVAC+DC/ 1AAC+DC, 1200 A, Ø 50 mm)
SP261
- Jaw opening 50 mm
- Current transducer 1200A
- Output voltage 1mV/1A
- Bandwidth DC A 3KHz
- Safety : 600 V CAT III
- MSRP: $509

Current transducer (1 mVAC/1 AAC, 2000 A, Ø 70 mm)
SP270
- Current transducer up to 2000 A
- Output voltage 1mV AC / 1A AC
- Bandwidth 40 Hz to 5 KHz
- Jaw opening 70 mm
- Safety : 600 V CAT III
- MSRP: $608

Straight fixed banana plug test leads (4mm)
SA100
- 4mm test probe
- Length: 1m
- Max current: 12A
- Set of 1 red and 1 black
- Safety: CAT III - 1000V and CAT IV - 600V
- MSRP: $

Right angle banana plug test lead set (4mm)
SA101
- 4mm test probe
- Length: 1m
- Max current: 12A
- Set of 1 red and 1 black
- Safety: CAT III - 1000V and CAT IV - 600V
- MSRP: $

Patch cord set with straight fixed banana plug
SA105
- 4mm safety banana
- Length: 1m
- Max current: 12A
- Set of 1 red and 1 black
- Safety: CAT IV - 1000V
- MSRP: $

Right angle banana plug to straight fixed banana plug
SA106
- 4mm safety banana
- Length: 1m
- Max current: 12A
- Set of 1 red and 1 black
- Safety: CAT III - 1000V and CAT IV - 600V
- MSRP: $

Alligator clip set (4mm)
SA110
- 1 alligator clip red and 1 black
- 4mm safety connetion
- 20A max current
- Safety: CAT III - 1000V and CAT IV - 600V
- MSRP: $

Test probes set
SA115
- 1 test probe red and 1 black
- 36A max current
- Safety: CAT III - 1000V and CAT IV - 600V
- MSRP: $

Maxigrabber set
SA120
- 1 maxibrabber red and 1 black
- High quality flexible test clip
- 6A max current
- Safety: CAT II - 1000V and CAT III - 600V
- MSRP: $

Straight fixed banana plug test leads (2mm tip)
SA150
- 1.2m length
- 2mm test probe
- 4mm safety banana plug (instrument side)
- PVC cable
- Max current: 12A
- Set of 1 black, 1 red
- Safety: 1000V CAT IV according to new IEC61010-031:2008
- MSRP: $

Safety test probes kit with 2mm tip
SA155
- Set of test probes (1 red, 1 black) with 2mm tip
- Max current: 16A
- To be used with 4mm male test lead (SA105 recommended)
- Safety: CAT IV - 1000V
- MSRP: $

IP2X test leads set with right angle safety banana
SA158
- IP2X test probes with 4mm tips
- Length: 1.2m
- PVC cable
- Max current: 12A
- Test probes with retractable and lockable sleeves
- Set of 1 red, 1 black
- Safety: 600V CAT IV and 1000V CAT III according to new IEC61010-031:2008
- MSRP: $

Pouch for multimeter
SC503
Protective carrying case for multimeters. Robust and equipped with a zipper, it protects your measuring equipment.
- MSRP: $