CAT# PM-122
$15.00 each
5 Vdc operation
0.56" figure height
Automatic Polarity Indication
Zero reading for 0 Volt input
Automatic Polarity Indication
High input impedance (>100M Ohm)

Maximum Input: 199.9mV DC (.1999 VDC)
Maximum Display: 3 1/2 digits with auto polarity indication
Measuring Method: Dual Slope Integration A-D converter system
Overrange Indication: "1" shown in display
Reading rate time: 2-3 readings per second
Input Impedance: >100M Ohm
Accuracy: 0.5%
Power Dissipation: 60mA DC
Supply Voltage: 5Vdc
Bezel: 2.75" x 1.26" x 0.25"
Average Customer Review:  (3 Reviews) Write A Review

Customer Comments

Average Customer Review:  (3 Reviews) Write A Review

A customer from STORRS, CT USA
Watch out for common ground
This is an excellent meter- the digits are large and bright and very readible. However, the use of a "common ground" means that the negative of the 5V power input is tied to the minus input that the meter measures. This limits design flexibility, particularly if you want to use the meter to measure current in various sub-domains of your design using shunt resistors while using a common (rather than floating) source of power to the meter.

A customer from SE Michigan
Segments failing on one unit
Using two of these in a bench power supply. One is still Ok 8 years later. The other developed dead segments a few years ago. This power supply is rarely used, and very well ventilated so I don't consider these voltmeters very good. This is the first item from All Electronics that has failed. Will be buying from AllCorp again, but not these voltmeters.

A customer from Maryland USA
hook up sheet?
I bought this one a while ago, and lost the piece of paper that came with it. Anyone has the info on how to hook this up please? It has 10 pins on the back.