The Sanwa PM7a is a pocket-size digital multimeter with a unique foldable design.
This digital multimeter has a 4000-count display and has an accuracy of 0.7%. The device has a unique design that features an integrated protective casing that allows it to fold just like a flip phone. The device is designed to be portable and to be used for measuring weak current circuits. A similar unit is also available with integrated solar power backup ().
The PM7a can pretty much do all the basic functions such as measuring voltage both AC (500Volts max) & DC (500 Volts max), resistance (40 mega-ohms max), continuity test with buzzer as well as diode test. It cannot however measure current.
The PM7a has a power-saving design with an auto power off feature that turns on after 15 minutes of inactivity. It consumes approximately 5mW of power and requires 2 LR44 (1.5V) coin style battery to operate.
Includes meter, instruction manual and test leads (attached).
- 4000 Count Display
- 0.07% Accuracy
- Range Hold
- Auto Power Off (15 min.)
- Low Power Ohm (input voltage 0.4V) at continuity range
- Power Saving Design
Specification
| PM7a | Measuring Range | Accuracy | Resolution | Input Impedance |
|---|---|---|---|---|
| DCV | 400m/4/40/400/500V | ±(0.7%+3) | 0.1mV | 10M～100MΩ |
| ACV | 4/40/400/500V | ±(2.3%+5) | 0.001V | 10M～11MΩ |
| Resistance | 400/4k/40k/400k/4M/40MΩ | ±(2.0%+5) | 0.1Ω | |
| Continuity | Buzzer sounds at less than 10Ω～120Ω Open voltage: approx. 0.4V | |||
| Diode test | Open voltage: approx. 1.5V | |||
| Display | Numeral display 4000 |
| Sampling rate | 3 times/sec. |
| Bandwidth | 40～400Hz |
| Battery | Button battery LR-44x2 |
| Size/Mass | H115×W57×D18mm/approx.85g |
| Test lead length/Pin tip | Length: approx. 0.5m/15mm |
Videos
Review courtesy of Darren Walker
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