The ZS-3 impedance meter is a precision digital instrument for measuring the true impedance of low-resistance speakers and 100 V loudspeaker systems. It uses a built-in 1 kHz test signal generator to ensure accurate and stable readings. Measurements are displayed clearly on a 4-digit LCD screen, which also features a data hold function and a low battery indicator.

With three selectable measurement ranges (0–20 Ohms, 0–200 Ohms, and 0–2000 Ohms), the ZS-3 is versatile enough for individual speaker checks as well as full 100 V system line testing. Its high accuracy of ±2% ensures reliable results, even in complex environments.

The unit comes in a durable, padded vinyl carrying case that includes compartments for leads, clamps, a shoulder strap, and spare batteries. All required accessories are included. Factory calibration is available upon request.

Technical Specifications:

Model:

• ZS-3

Connections:

• Banana plugs

Measurement Ranges:

• 0–20 Ohms
• 0–200 Ohms
• 0–2000 Ohms

Accuracy:

• ±2%

Test Frequency:

• 1 kHz

Power Supply:

• 6 × 1.5 V AA batteries

Display:

• 4-digit LCD with data hold and battery status indicator

Housing:

• Compact, durable, with protective cover

Dimensions (W × H × D):

• 168 × 110 × 62 mm

Weight:

• 584 g (including batteries)

Features:

• Digital display of impedance (apparent resistance)
• Suitable for low-impedance and 100 V loudspeaker systems
• Optional factory calibration available

Included in Delivery:

• ZS-3 digital impedance meter with protective cover
• 2 measuring cables with detachable clamps
• 6 AA batteries
• Shoulder strap
• Padded vinyl carrying case with 3 compartments
• Instruction sheet including power-to-impedance conversion chart