Specifications:
Auto function intelligent digital multimeter
St33
Special functions
Auto change test
Continuity test
Data hold
Auto power off power 9v(6f22)
Function range accuracy
DC voltage 0~600v +/-(0.8%+1)
AC voltage 0~600v +/-(1.2%+3)
Resistance 0~400 ohm +/-(1.0%+2)
LCD display 3 3/4 digits
Max reading 3999
Range auto range

Phase voltage phase rotation digital multimeter
St39
Special functions
Diode test
Continuity test
Data hold
Auto power off
Phase sequence
Phase voltage test
Backlight
Power 2*1.5vaaa
Function range accuracy
DC voltage 0~600v +/-(0.8%+1
AC voltage 0~600v +/-(1.5%+5)
Resistance 0~40m ohm +/-(1.0%+2)
Phase voltage 0~600v +/-(1.5%+5)
LCD display 3 3/4 digits
Max. Reading 3999
Range auto range

St35
Special functions
Diode test
Continuity test
Data hold
Auto power off
Power 2*1.5vaaa
Function range accuracy
DC voltage 0~600v +/-(0.8%+1)
AC voltage 0~600v +/-(1.2%+3)
Resistance 0~40m ohm +/-(1.0%+2)
DC current 0~10a +/-(1.8%+5)
AC current 0~10a +/-(3%+5)
Frequency test 5hz-999khz +/-(1.5%+5)
Duty test 20%-90% +/-(3.5%+5)
Capacitance 5nf-100uf +/-(3.0%+5)
Temperature -40~+800 c degree +/-(3.0%+5)
LCD display 3 3/4 digits
Max reading 3999

St36
Special functions
Diode test
Continuity test
Data hold
Auto power off
Power 2*1.5vaaa
Function range accuracy
DC voltage 0~600v +/-(0.8%+1)
AC voltage 0~600v +/-(1.2%+3)
Resistance 0~40m ohm +/-(1.0%+2)
DC current 0~10a +/-(1.8%+5)
AC current 0~10a +/-(3%+5)
Frequency test 5hz-999khz +/-(1.5%+5)
Duty test 20%-90% +/-(3.5%+5)
Capacitance 5nf-100uf +/-(3.0%+5)
LCD display 3 3/4 digits
Max reading 3999
Range auto range