This is an automatic AC clamp multimeter with AutoTect™ function and automatic backlight.
The AC71B is a digital clamp multimeter that automatically detects the type of measurement with its AutoTect™ feature, eliminating the need for a function knob. It also includes an automatic bright‑blue backlight that activates in low‑light conditions, making readings easy to read.
The device measures AC and DC voltage, resistance, continuity, and AC current up to 600 A. It runs on a single 9 V battery with an estimated 250‑hour life, displays values on a 6000‑digit LCD, and meets safety standards CAT II 1000 V and CAT III 600 V.
| AC current range | 0‑600 A |
|---|---|
| AC voltage range | 1.3‑750 V |
| DC voltage range | 1.8‑1000 V |
| Display | 6000‑digit large‑scale LCD |
| Battery type | Single 9 V alkaline (NEDA160A) |
| Battery life | ≈250 hours |
| Conductor size | 32 mm (1.3 in) diameter |
| Safety rating | CAT II 1000 V, CAT III 600 V |
AutoTect™ automatically senses the type of measurement being made and selects AC volts, DC volts, or resistance, displaying the value with the appropriate unit icon.
The meter has an automatic bright blue backlight that turns on when the ambient light becomes dim, providing easy reading in low‑light environments.
The AC71B runs on a single 9 V alkaline battery and provides about 250 hours of operation.