What is the least count of voltage and current measurement?

Lease count/resolution depends on the range selected. For e.g. on 600V a/c range the least count is 1 i.e. 1 Volt;for 200V a/C range it is 200mV; similarly for 600v DC range it is 1V and 200V DC it is 100mV. You may refer the instruction manual and refer Resolution in DC/AC voltage range so also in DC current Range. I could measure the range of A/C and D/C voltage and observe.

I was watching both, green and yellow model pictures and found that green(black)image do not show npn/pnp slot.only yellow one show.kindly explain.

This is not mastech multimeter. This is unity company multimeter...

Is it safe to use in mains and more than 2A or just for low end use?

Yes it is safe to use on mains. Not sure about current capacity.

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⚡ Power up your precision — the pocket multimeter that means business!

BUILT FOR SAFETY - CAT II 600V rating ensures reliable performance in moderate energy environments.
DURABLE DEPENDABLE - IP20 splash-resistant casing and fuse protection keep your tool safe during daily use.
CLEAR READINGS EVERY TIME - Large 1999-count digital display with polarity and over-range indicators for foolproof measurements.
WARRANTY BACKED CONFIDENCE - 1-year manufacturer warranty shields you from defects, empowering worry-free troubleshooting.
PRECISION MEETS PORTABILITY - Compact 118g design fits your on-the-go lifestyle without sacrificing accuracy.

The Mastech MAS830L is a lightweight, battery-powered digital multimeter designed for professionals who demand accuracy and safety. Featuring a CAT II 600V safety rating, a clear 1999-count display with polarity and over-range indicators, and a splash-resistant IP20 casing, it’s built to handle everyday electrical diagnostics with confidence. Backed by a 1-year warranty, this compact tool is your reliable partner for precise measurements on the move.

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Brand	Mastech
Power Source	Battery Powered
Style	Digital
Colour	Yellow or Green
Item Weight	118 Grams
Item dimensions L x W x H	15 x 13 x 4 Centimeters
Min. Operating Voltage	9 Volts
Measurement Type	Multimeter
UPC	734026223036 110243617726 644725716961 802405274372 734026223043 734026223067
Manufacturer	Mastech
Model number	MAS830L
Number of Memory Sticks	1
Item Weight	118 g
Product Dimensions	15 x 13 x 4 cm; 118 g
Batteries	1 9V batteries required.
Item model number	MAS830L
Item Height	40 Millimeters
Item Width	13 Centimeters
Voltage	9 Volts
Are batteries included?	No

Mastech Mas830L Digital Pocket Battery Powered Multimeter (Assorted)

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