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Product description: Universal meter with digital oscilloscope and 50MHz generator - ZOYI ZT-703S
The ZT-703S is a modern multimeter from ZOYI ZOTEK, designed for precise measurements and versatile applications. The device supports AC/DC voltage measurements with a wide range up to 1000 V, current up to 10 A, resistance up to 250 MΩ , as well as capacitance and frequency . A built-in oscilloscope with two channels, a 50 MHz bandwidth , and a sampling rate of up to 280 MSa/s enables real-time signal analysis. Features such as True RMS, data logging, HOLD, REL, and auto ranging make it a professional yet intuitive tool.

The meter offers various functions such as True RMS, HOLD, REL, automatic and manual ranging, data storage and the ability to transfer data to a computer via USB.
Main features of the ZT-703S multimeter
- Multimeter + Oscilloscope + Generator: A Comprehensive Testing and Diagnostics Tool
- Wide measurement range: voltage up to 1000 V, current up to 10 A, resistance up to 250 MΩ
- 2.8'' IPS display with four-level brightness adjustment : 30%, 50%, 80%, 100%
- 50 MHz oscilloscope: analyze signals with a sampling rate of up to 280 MSa/s
- True RMS measurement: precise analysis of AC waveforms
- Data recording, HOLD, REL: convenience and functionality in any work environment
- Built-in 2000 mAh battery: long operation without recharging
- USB communication: export results to computer
- Silicone casing: protection against damage and overheating
Advanced measurement functions and practical possibilities
The ZT-703S multimeter is much more than a traditional meter – it's an advanced diagnostic tool that enables precise measurements of a wide range of electrical parameters. It measures DC/AC voltages up to 1000 V, currents up to 10 A, and resistances up to 250 MΩ , while offering high accuracy thanks to a resolution of 0.001 mV . Ranges can be changed automatically or manually , giving the user full control over the measurement process. Additional functions, such as capacitance measurement (up to 99.99 mF), frequency (up to 999.9 kHz), and diode and continuity testing , make the device a comprehensive measurement tool – ideal for working with power supplies , digital and analog circuits, and audio devices. It's worth noting that the ZT-703S also has a temperature measurement function up to 1000°C , making it a universal tool for both electronics technicians and household appliance service technicians.

The multimeter has a built-in 3.7 V lithium battery with a capacity of 2000 mAh, charged via the USB Type-C port.
Work comfort, data memory and computer integration
The ZT-703S is designed with user comfort and ease of use in a variety of conditions in mind. The 2.8-inch color IPS display offers four brightness levels (30%, 50%, 80%, 100%), ensuring excellent readability even in bright lighting or dark service areas. An intuitive English menu facilitates quick switching between modes and parameters, and the HOLD function freezes the measurement value, which is particularly useful in hard-to-reach areas. Thanks to the data storage option and the USB Type-C port, the device allows for transferring measurements to a computer , which is invaluable for laboratory work, documentation, or teaching. Additionally, the REL function (relative measurement) and automatic shutdown (15-120 minutes or manual shutdown) make this multimeter not only functional but also energy-efficient and safe.
| Measurements and functions of the ZT-703S multimeter | |||
|---|---|---|---|
| Function | Range | Resolution | Accuracy |
| DC voltage (V) | 1000mV/250V/25V/2.5V | from 0.1 mV to 0.1 V | ±(0.5% + 3 digits) |
| DC voltage (mV) | 250 mV / 25 mV | from 0.001 mV to 0.01 mV | ±(0.5% + 3 digits) |
| AC voltage (V) | 1000mV/250V/25V/2.5V | from 0.1 mV to 0.1 V | ±(1% + 3 digits) |
| AC voltage (mV) | 250 mV / 25 mV | from 0.001 mV to 0.01 mV | ±(1% + 3 digits) |
| DC current (A) | 10A / 2.5A | from 0.001 A to 0.1 mA | ±(1% + 3 digits) |
| DC current (μA / mA) | 25 mA / 250 μA | from 0.01 mA to 1 μA | ±(0.8% + 3 digits) |
| AC current (A) | 10A / 2.5A | from 0.001 A to 0.1 mA | ±(1.2% + 3 digits) |
| AC current (μA / mA) | 25 mA / 250 μA | from 0.01 mA to 1 μA | ±(1% + 3 digits) |
| Resistance | 250 Ω / 2.5 kΩ / 25 kΩ / 250 kΩ / 2.5 MΩ / 25 MΩ / 250 MΩ | from 0.01 Ω to 0.01 MΩ | ±(3.0% + 5 digits) |
| Capacity | 9.999 nF / 99.99 nF / 999.9 nF / 9.999 μF / 99.99 μF / 999.9 μF / 9.999 mF / 99.99 mF | from 0.001 nF to 0.01 mF | ±(5.0% + 5 digits) |
| Frequency | 99.99 Hz / 999.9 Hz / 9.999 kHz / 99.99 kHz / 999.9 kHz | from 0.01 Hz to 0.1 kHz | ±(0.1% + 2 digits) |
| Additional functions | |||
| Diode tester | ✔ | ||
| Continuity tester | ✔ | ||
| Saving data to memory | ✔ | ||
| Maximum indication | 25000 | ||
| HOLD function | ✔ | ||
| True RMS | ✔ | ||
| REL function | ✔ | ||
| Automatic/manual range change | ✔ | ||
Technical specifications of the meter
- Device type: digital multimeter with built-in oscilloscope and generator
- Model: ZT-703S
- Display: 2.8" color IPS with adjustable brightness: 30%, 50%, 80%, 100%
- Menu: in English
- Power supply: built-in 3.7V 2000mAh lithium battery
- Charging: via USB Type-C port
- Protection: silicone casing, built-in fuses, thermal protection
- Length of measuring cables: 107 cm
- Multimeter functions: voltage, current, resistance, capacitance, frequency, temperature, diode test, circuit continuity
- Advanced features: True RMS, HOLD function, REL, data logging, auto/manual ranging
- Maximum reading: 25000
- Auto-off adjustment: 15 / 30 / 60 / 120 min or off
- Dimensions: 177 x 89 x 40 mm
- Weight: 305 g
Function generator technical specifications
- Generated waveforms: sine, square, triangle, sawtooth, half-wave, full-wave
- Frequency range: 1 Hz to 1 MHz
- Adjustable output amplitude: up to 3.3 V
Technical specifications of the oscilloscope
- Bandwidth: up to 50 MHz
- Number of channels: 2 analog
- Coupling: DC / AC
- Input impedance: 1 MΩ / 16 pF
- Maximum input voltage: 150 V (DC + AC peak)
- Sampling rate: up to 280 MSa/s
- Interpolation: sin(x)/x
- Time base: 50 ns/div to 20 s/div
- Time base accuracy: 20 ppm
- Memory Record: 128k
- Refresh rate: 3 times/s
- Automatic measurements: period, frequency, max, min, RMS, peak-to-peak
- Voltage sensitivity: from 20 mV/div to 10 V/div
- Frequency resolution: 10 Hz
- Rise time: less than 20 ns
- Measurement accuracy: ±3%
- Trigger modes: auto, normal, single
- Trigger types: rising/falling edge
- Probe: with 1:1 / 1:10 divider
- Display modes: YT, XY, Roll
Kit contents
- 1x Multimeter ZT-703S
- 1x Set of test leads
- 1x Oscilloscope probe
- 1x USB cable
- 1x User Manual
- 1x Carrying Case
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