CAT III 600 V, CAT IV 300 V (per the linked BM230-series manual and the 2025 Brymen catalog; the product page alone prints 1000 V / CAT II 1000 V, which the manual's DC ranges ending 600.0 V do not support)
The category and its voltage belong together. Match both to the installation; the voltage range alone does not establish the category.
The buying trap. A capability or category marking does not approve the leads, setup or a live procedure.
Open the source rows
DC voltage
60.00 mV, 600.0 mV, 6.000 V, 60.00 V, 600.0 V; ±(0.2% + 2 d) on the 60.00 mV / 600.0 mV / 6.000 V ranges, ±(0.5% + 3 d) on 60.00 V / 600.0 V
Safety rating
CAT III 600 V / CAT IV 300 V per the BM230-series manual and the 2025 Brymen catalog (the product page prints 1000 V / CAT II 1000 V, which the manual's ranges do not support)
Brymen BM235. CAT III 600 V, CAT IV 300 V (per the linked BM230-series manual and the 2025 Brymen catalog; the product page alone prints 1000 V / CAT II 1000 V, which the manual's DC ranges ending 600.0 V do not support)
6000-count dual-display meter with temperature measurement (−40 to 400 °C) via the included BKP60 type-K thermocouple; the only BM230-series model with the temperature function.
A 6000-count autoranging True RMS digital multimeter with a dual-display, low-pass VFD filter, low-impedance AutoV LoZ mode and input-alert beeping, aimed at electronics and component work.
Which version should you buy?
Selected package: Brymen BM235 multimeter.
Selected package
Brymen BM235 multimeter
This page
Model: BM235
What differs
6000-count dual-display meter with temperature measurement (−40 to 400 °C) via the included BKP60 type-K thermocouple; the only BM230-series model with the temperature function.
These are different products. Check their specifications separately.
Brymen BM231 multimeter Model: BM231
Same BM230-series body but 6000 counts without the secondary display scale and without temperature measurement.
A lower-cost BM230-series meter when temperature measurement isn't needed.
Brymen BM233 multimeter Model: BM233
Same BM230-series body with the dual display but without the temperature function and BKP60 thermocouple.
Dual-display measurements when temperature probing isn't needed.
Purchase links appear where the exact offer is verified. Confirm the named model, quantity and accessories before ordering.
Watch out
Only the BM235 measures temperature; check the included BKP60 type-K thermocouple to confirm the model.
The BM23x and BM25x series look similar; the BM235 is a 6000-count dual-display AAA-powered meter.
A listing with a carrying bag or silicone leads included is a bundle, not the bare BM235 kit.
Why people pick it
6000-count True RMS meter with an unusually clear dual display and a backlight, per Brymen's spec sheet
AutoV LoZ and the VFD low-pass filter — modes usually found only on pricier meters — are both built in
BeepJack input alert warns before measuring voltage with the leads in a current jack, a common blow-up path
High-interruption-rated ceramic fuses (30 kA and 20 kA IR) on the current jacks, per the manual
The μA range plus Min/Max/ Average recording makes it practical to profile sleep and standby current draw
Know before you buy
The maker sells no USB cable or PC logging software bundled with the meter; the optical-USB link kit is a separate purchase and the protocol is undocumented
The product page's '1000 V / CAT II' claim conflicts with the linked manual's CAT III 600 V / CAT IV 300 V rating and 600.0 V top DC range, so the lower rating is the safe one to quote
No IP or drop rating is published for the BM235 in Brymen's documentation
Max/Min/ Average logging on the meter itself; longer data logging needs the optional PC-link kit
Full specifications
Display
Dual LCD, primary 6000 counts (optionally 4.5-digit 20000 counts via SETUP) plus a secondary scale
DC voltage
60.00 mV, 600.0 mV, 6.000 V, 60.00 V, 600.0 V; ±(0.2% + 2 d) on the 60.00 mV / 600.0 mV / 6.000 V ranges, ±(0.5% + 3 d) on 60.00 V / 600.0 V
AC voltage
6.000 V to 600.0 V, True RMS, ±(0.8% + 3 d); AC V 600 mV range ±(1.0% + 3 d)
Current ranges
μA: 600.0 μA / 6000 μA; mA: 60.00 mA / 600.0 mA; A: 6.000 A / 10.00 A; True RMS on AC
Continuous current
10 A continuous (20 A for up to 30 seconds with cooling)
Current fuses
μA/mA jacks: 0.4 A / 1000 V IR 30 kA ceramic; A jack: 11 A / 1000 V IR 20 kA ceramic
Resistance
600.0 Ω to 60.00 MΩ; ±(0.5% + 3 d) at 600 Ω
Capacitance
20.00 nF to 10.00 mF
Frequency and duty
Frequency to 1 MHz; duty cycle 1 to 99%
Temperature
−40 to 400 °C / −40 to 752 °F (Model 235 only, via the included BKP60 type-K thermocouple); ±(1.0% + 2 °C)
Safety rating
CAT III 600 V / CAT IV 300 V per the BM230-series manual and the 2025 Brymen catalog (the product page prints 1000 V / CAT II 1000 V, which the manual's ranges do not support)
Extra modes
AutoV LoZ (low-impedance auto mode for ghost-voltage checks), VFD low-pass filter for drive/UPS outputs, BeepLit continuity (LED + beeper fire in parallel), BeepJack input alert, diode test, μA range for sleep-current measurement
Batteries
Two AAA 1.5 V (included); roughly 900 hours typical
Size and weight
161 × 80 × 50 mm; about 334 g with batteries
In the box
BM235 meter, test leads, BKP60 type-K thermocouple, two AAA batteries, user manual
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