OWON Digital Multimeter - 33 category
Product Series : DM Series

Main Features

- function as 3 in 1 : datalogger + multimeter + temperature meter
- multi-connection (more than one device) supported via mobile app
- the change trend analysis accessible via special chart mode
- voice warning supported, which assures measurement safety
- smart voice-reading accessible
-  3(3/4)-digit counterparts
- smart power-off option extending battery life
- Bluetooth 4.0 version - supports mobile device with Android 4.3

  or above / iOS 7.0 or above OS, and equipped with ble 4.0 module


electronic circuit debugging      circuit testing
design and manufacture           education and training
automobile maintenance and testing

Model No. Bluetooth Module Offline Recording Function
D33 × ×
B33 ×


Model D33 B33 B33+
  Measurement Range Resolution Accruacy
DC Voltage V 40.00mV/400.0mV/4.000V/40.00V/400.0V 0.1mV ±(0.5%+2dig)
1000V 1V
AC Voltage   40.00mV/400.0mV/4.000V/40.00V 1mV ±(0.8%+2dig)
V 400.0V/750V 0.1V ±(1%+3dig)
DC Current μA 400.0μA/4000μA 0.1μA ±(0.8%+2dig)
mA 40.00mA/400.0mA 0.01mA ±(0.8%+2dig)
A 1.000A/10.00A 1mA ±(1.2%+3dig)
AC Current μA 400.0μA/4000μA 0.1μA ±(1%+3dig)
mA 40.00mA/400.0mA 0.01mA ±(0.8%+2dig)
A 20.00A 1mA ±(2%+3dig)
Resistance 400.0Ω/4.000kΩ/40.00kΩ/400.0kΩ/4.000MΩ/4.00MΩ 0.1Ω ±(0.8%+2dig)
40.00MΩ 0.01MΩ ±(2%+3dig)
Capacitance 40.00nF/400.0nF/4.000μF/40.00μF 0.1nF ±(2.5%+3dig)
100.0μF 0.1μF ±(3%+5dig)
Frequency 4.999Hz/49.99Hz/499.9Hz/4.999kHz/949.99kHz/499.9kHz/ 4.999MHz 1mHz ±(0.8%+2dig)
Duty Ratio 0.1%~99.9%(typical value: Vrms=1V, f=1kHz) 0.1% ±(1.2%+3dig)
0.1% ~99.9%(≥1kHz) ±(2.5%+2dig)
Temperature -50℃~+400℃ 1°C ±(2.5%+3dig)
Display 3999 count
Frequency (40-400)Hz
Shift Rate on DMM 3  times  /  s
Shift Rate on App 2  times  /  s
Simulated Chart Shift Rate on DMM 30  times  /  s
Bluetooth Module √  (only in B33, and B33+) Offline Recording Function √ (only in B33+)
Auto-scale √  LCD Backlight √  
Diode Test √   Input Protection √ 
Auto Power-off √  Input Impedance 10MΩ
On-off Warning √  LCD Size 69 x 52 mm
Low-battery Indicator √  Weight (without package) 0.32 kg
Data Hold √  Display Area 67 x 46 mm(effective area 66 x 45 mm)
Relative Measurement √  Battery 3V (1.5V x 2)


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