ZOYI ZT-S1+ / ZT-S1 Digital Multimeter User Manual

1. Introduction

The ZOYI ZT-S1+ and ZT-S1 are intelligent, high-precision digital multimeters designed for both household and professional electrical measurements. These compact, auto-ranging devices offer a range of functions including AC/DC voltage, AC/DC current, resistance, continuity, and Non-Contact Voltage (NCV) detection. The ZT-S1+ model further includes capacitance and frequency measurement capabilities.

2. Safety Information

Always observe safety precautions when using electrical testing equipment. Failure to do so may result in injury or damage to the meter. This device is CE certified and rated for CAT II 600V.

• Do not exceed the maximum input values specified for each measurement range.
• Ensure test leads are in good condition and properly connected before making measurements.
• Do not use the meter if it appears damaged or if the protective case is removed.
• Always turn off power to the circuit under test before connecting or disconnecting test leads for current measurements.
• Be cautious when working with voltages above 30V AC RMS, 42V peak, or 60V DC, as they pose a shock hazard.
• Replace batteries promptly when the low battery indicator appears.

3. Package Contents

Upon unpacking, please verify that all items listed below are present and undamaged:

• ZOYI Digital Multimeter (ZT-S1 or ZT-S1+)
• Test Leads (Red and Black)
• User Manual
• Soft Rubber Protective Case (pre-installed or separate)

4. Meter Overview

Familiarize yourself with the components of your ZOYI Digital Multimeter:

1. NCV Sensing Area: Used for Non-Contact Voltage detection.
2. LCD Screen with Backlight: Displays measurement readings and indicators.
3. SEL/NCV Button: Selects measurement modes (e.g., AC/DC for voltage/current) or activates NCV function.
4. H/ZERO/* Button: Data Hold function, Zero adjustment, or Backlight/Flashlight control.
5. Power Button: Turns the multimeter ON/OFF.
6. Current Input Terminal (10A FUSED): For current measurements up to 10A.
7. Common Terminal (COM): For the black test lead.
8. Input Terminal (VΩHz): For voltage, resistance, frequency, capacitance (ZT-S1+ only), and continuity measurements.

The multimeter also features a built-in flashlight for illuminating work areas and a kickstand for hands-free operation.

5. Setup

5.1. Battery Installation

The ZOYI ZT-S1+ / ZT-S1 multimeter requires two AAA batteries (not included) for operation.

1. Ensure the multimeter is powered off.
2. Locate the battery compartment on the back of the device.
3. Open the battery compartment cover.
4. Insert two AAA batteries, observing the correct polarity (+/-) as indicated inside the compartment.
5. Close the battery compartment cover securely.

5.2. Attaching the Protective Case

The multimeter comes with a soft rubber protective case to guard against drops and impacts. If not already installed, carefully fit the multimeter into the case, ensuring all buttons and ports are accessible.

6. Operating Instructions

The ZOYI ZT-S1+ / ZT-S1 features an "Auto Range" operating mode, simplifying measurements by automatically detecting the type and range of the input signal.

6.1. Power On/Off

Press the red Power Button to turn the multimeter ON or OFF.

6.2. Automatic Measurement (AUTO Mode)

In AUTO mode, the multimeter automatically identifies and measures AC voltage, DC voltage, resistance, and continuity.

6.3. Voltage Measurement (AC/DC)

1. Insert the red test lead into the "VΩHz" input terminal and the black test lead into the "COM" terminal.
2. Turn on the multimeter. It will typically default to AUTO mode.
3. Connect the test leads across the circuit or component to be measured. The meter will automatically detect AC or DC voltage.
4. Read the voltage value on the LCD screen.

6.4. Current Measurement (AC/DC)

1. Insert the red test lead into the "10A FUSED" input terminal and the black test lead into the "COM" terminal.
2. Turn on the multimeter.
3. Press the SEL/NCV button to cycle between AC and DC current modes if necessary.
4. Important: Connect the multimeter in series with the circuit to measure current. Never connect it in parallel across a voltage source when in current mode.
5. Read the current value on the LCD screen.

6.5. Resistance Measurement

1. Insert the red test lead into the "VΩHz" input terminal and the black test lead into the "COM" terminal.
2. Turn on the multimeter. It will automatically detect resistance in AUTO mode.
3. Connect the test leads across the component to measure its resistance. Ensure the component is de-energized.
4. Read the resistance value on the LCD screen.

6.6. Continuity Test

1. Insert the red test lead into the "VΩHz" input terminal and the black test lead into the "COM" terminal.
2. Turn on the multimeter. It will automatically detect continuity in AUTO mode.
3. Connect the test leads across the circuit or component.
4. If continuity exists (low resistance), the meter will emit an audible buzzer sound and an indicator light will flash.

6.7. Non-Contact Voltage (NCV) Detection

1. Press and hold the SEL/NCV button to activate NCV mode.
2. Move the NCV sensing area (top of the meter) close to a live wire or electrical outlet.
3. The meter will indicate the presence of AC voltage through audible beeps and visual alerts (flashing light).

6.8. Capacitance Measurement (ZT-S1+ Only)

This function is available only on the ZT-S1+ model.

1. Insert the red test lead into the "VΩHz" input terminal and the black test lead into the "COM" terminal.
2. Turn on the multimeter. Press the SEL/NCV button until the capacitance symbol (e.g., "nF", "uF") appears on the display.
3. Discharge the capacitor before connecting the test leads.
4. Connect the test leads across the capacitor.
5. Read the capacitance value on the LCD screen.

6.9. Data Hold, Backlight, and Flashlight

• Data Hold: Press the H/ZERO/* button briefly to hold the current reading on the display. Press again to release.
• Backlight/Flashlight: Press and hold the H/ZERO/* button to toggle the backlight and flashlight.

7. Specifications

The following table details the functional parameters for both ZT-S1 and ZT-S1+ models:

8. Maintenance

8.1. Cleaning

Wipe the meter with a damp cloth and mild detergent. Do not use abrasives or solvents. Keep the terminals free of dirt and moisture.

8.2. Battery Replacement

When the low battery indicator appears on the display, replace the batteries as described in the "Battery Installation" section (5.1). Always use two new AAA batteries of the same type.

8.3. Test Lead Care

Inspect test leads for damaged insulation or exposed metal before each use. Replace damaged leads immediately to prevent electrical shock.

8.4. Storage

If the meter is not to be used for an extended period, remove the batteries to prevent leakage. Store the meter in a cool, dry place, away from direct sunlight and extreme temperatures.

9. Troubleshooting

10. User Tips

• Always read the full instruction manual before using the multimeter for the first time.
• For precise current measurements, ensure the meter is connected in series with the load.
• When measuring voltage, connect the meter in parallel with the component.
• Utilize the NCV function for a quick and safe check for live wires before making contact measurements.
• The auto-ranging feature makes this meter very user-friendly for general electrical tasks.

11. Warranty and Support

Specific product warranty details are not provided in the available information. For any issues, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.

The seller offers certain service guarantees, including:

• Free returns within 90 days.
• Refunds for lost or damaged packages.
• Refunds if items damaged.
• Refunds if no delivery within 30 days.
• A coupon code if delivery is delayed.

These guarantees are provided by the seller and may be subject to their terms and conditions.