1. Introduction
The ZOYI ZT-5566SE is an advanced automatic range multi-function digital multimeter designed for high-precision measurements. Featuring a 19999-count LCD display with adjustable backlight, it provides clear readings for various electrical parameters. This device is powered by a lithium battery and includes True RMS measurement capabilities, a clock, an alarm clock, Bluetooth audio playback, and ambient temperature display. Its unique voice broadcast function enhances usability by announcing measurement values.
Image: Overview of ZOYI ZT-5566SE functions including AC/DC voltage, current, resistance, capacitance, diode, continuity, frequency, temperature, Bluetooth, audio playback, time display, and voice broadcast.
2. Package Contents
Before using your ZOYI ZT-5566SE, please ensure all items are present in the package:
- ZOYI ZT-5566SE Desktop Digital Multimeter
- User Manual
- Test Leads (red and black)
- Data Cable (USB)
Image: Standard configuration showing the multimeter, color box, user manual, test leads, and data cable.
3. Setup
3.1 Powering the Device
The ZT-5566SE is powered by two 18650 lithium batteries. Ensure the batteries are correctly inserted into the battery compartment located on the back of the device. The device can also be charged via the charging interface (maximum input 5V/2A) using the provided data cable.
Image: Back panel display showing the battery compartment, power switch, brightness/volume controls, C/F switch, and charging interface.
3.2 Test Lead Connection
Connect the red test lead to the 'VΩHz' or 'mA' or 'A' input jack depending on the measurement type, and the black test lead to the 'COM' (common) input jack. Ensure connections are secure before taking measurements.
Image: Detailed view of silicone test leads and their connection points, including the voice announcement button on the test lead.
3.3 Bluetooth Connection
To use the Bluetooth features (audio playback, voice broadcast), enable Bluetooth on your smartphone and pair it with the ZT-5566SE. The device can function as a portable speaker.
Image: Visual guide for connecting the multimeter via Bluetooth to a smartphone, showing app interface screenshots.
4. Operating Instructions
4.1 General Operation
The ZT-5566SE features an auto-ranging function, simplifying measurement selection. Turn on the device using the power switch on the back. The large VA HD screen will display readings, clock, and temperature.
Image: Detailed product features including VA HD big screen, clock/temperature display, dual speakers, battery/charging, and retractable tripod.
4.2 Measurement Functions
The multimeter supports a wide range of measurements. Refer to the front panel and the technical parameter display for specific input jacks and function buttons.
Image: Front panel with numbered callouts indicating various features and their corresponding functions, such as AC and DC voltage/current measurement, resistance, on-off buzzer, diode, capacitance, data retention, peak/max/min hold, relative value measurement, secondary display, function test, mA/A current jacks, and volume/range control.
- Voltage Measurement (AC/DC): Connect test leads to the 'VΩHz' and 'COM' jacks. The device will automatically detect AC or DC voltage.
- Current Measurement (AC/DC): Connect test leads to the 'mA' or 'A' and 'COM' jacks. Select the appropriate range if not in auto mode.
- Resistance Measurement: Connect test leads to the 'VΩHz' and 'COM' jacks.
- Capacitance Measurement: Connect test leads to the 'VΩHz' and 'COM' jacks.
- Diode Test: Connect test leads to the 'VΩHz' and 'COM' jacks.
- Continuity Test (On-off beep): Connect test leads to the 'VΩHz' and 'COM' jacks. An audible beep indicates continuity.
- Frequency Measurement: Connect test leads to the 'VΩHz' and 'COM' jacks.
Image: Examples of various measurements being performed, including AC voltage, DC voltage, resistance, capacitance, and continuity (on-off beep).
4.3 Voice Broadcast
After inserting the test lead into the COM jack, press the voice announcement button (often integrated into the test lead or a dedicated button on the device) once. The multimeter will announce the current measurement function and its value by voice.
Image: Multimeter performing an AC voltage measurement with a voice bubble indicating "The current voltage is 224.6V", demonstrating the voice broadcast feature.
4.4 Bluetooth Speaker Function
The ZT-5566SE can also function as a Bluetooth speaker, offering 360° stereo surround sound with powerful bass. Pair your device via Bluetooth to play audio.
Image: Multimeter next to a smartphone playing music, illustrating its Bluetooth speaker capability.
4.5 Clock and Alarm Clock
The device features a time display and an alarm clock function. Adjust settings as needed for daily use.
Image: Multimeter displaying time and temperature, highlighting the alarm clock feature.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the multimeter in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: If the device will not be used for an extended period, remove the batteries to prevent leakage. Recharge the lithium batteries regularly to maintain their lifespan.
- Test Leads: Inspect test leads for any damage before each use. Replace if insulation is cracked or wires are exposed.
6. Troubleshooting
- Device not turning on: Check battery charge and ensure batteries are correctly inserted.
- Inaccurate readings: Ensure test leads are properly connected and not damaged. Verify the correct measurement function is selected (though auto-ranging should handle most cases).
- No Bluetooth connection: Ensure Bluetooth is enabled on both the multimeter and your smartphone. Try restarting both devices.
- No voice broadcast: Check if the voice announcement button is being pressed correctly. Ensure volume is not muted.
- Display issues: Adjust backlight brightness. If the display is still problematic, contact support.
7. Specifications
| Feature | Detail |
|---|---|
| Display (LCD) | 19999 COUNT |
| Range | Automatic / Manual |
| Material | ABS+TPE |
| Sampling rate | 3 times / sec |
| True RMS | Yes |
| Data retention | Yes |
| Screen backlight | Yes |
| Low battery prompt | Yes |
| Automatic standby | Yes |
| Battery type | 2 x 18650 lithium battery |
| Dimensions | 200*135*105mm |
| Operating Temperature | 0 - 40 ℃ |
| Certification | CE |
| Is Smart Device | Yes |
| Feature | Range | Precision |
|---|---|---|
| DC Voltage (V) | 1.9999V/19.999V/199.99V/1000.0V | ±(0.05%+3) |
| DC Voltage (mV) | 19.999mV/199.99mV | ±(0.05%+3) |
| AC Voltage (V) | 1.9999V/19.999V/199.99V/750.0V | ±(0.3%+3) |
| AC Voltage (mV) | 19.999mV/199.99mV | ±(0.3%+3) |
| DC Current (A) | 1.9999A/19.999A | ±(0.5%+3) |
| DC Current (mA) | 19.999mA/199.99mA | ±(0.5%+3) |
| AC Current (A) | 1.9999A/19.999A | ±(0.8%+3) |
| AC Current (mA) | 19.999mA/199.99mA | ±(0.8%+3) |
| Resistance (Ω) | 199.99Ω | ±(0.5%+3) |
| Resistance (KΩ) | 1.9999kΩ/19.999kΩ/199.99kΩ | ±(0.2%+3) |
| Resistance (MΩ) | 1.9999MΩ/19.999MΩ | ±(1.0%+3) |
| Resistance (MΩ) | 199.99MΩ | ±(5.0%+5) |
| Capacitance (nF) | 9.999nF | ±(5.0%+20) |
| Capacitance (nF/μF) | 99.99nF/999.9nF/9.999μF/99.99μF/999.9μF | ±(2.0%+5) |
| Capacitance (mF) | 9.999mF | ±(5.0%+5) |
| Frequency (Hz/kHz/MHz) | 99.99Hz/999.9Hz/9.999kHz/99.99kHz/999.9kHz/6.000MHz | ±(0.1%+2) |
| Diode | Yes | |
| On and off (Continuity) | Yes |
| Parameter | Value |
|---|---|
| Bluetooth version | V5.0 |
| Transmission distance | ≤10M |
| Rated power | 2 x 4W RMS |
| Frequency response range | 100Hz-18KHz |
| Distortion | ≤1% |
| Signal to noise ratio | ≥76dB |
8. User Tips
- Always ensure the correct function and range are selected for your measurement, even with auto-ranging, to prevent damage to the device or circuit.
- For critical measurements, take multiple readings to ensure consistency.
- Utilize the voice broadcast feature in low-light conditions or when your hands are occupied, to hear the measurement results without needing to look at the display.
- Keep the multimeter's firmware updated if updates become available, to ensure optimal performance and access to new features.
Video: A general demonstration of a ZOYI multimeter's basic functions, including AC voltage, DC voltage, resistance, and continuity measurements. Note: This video features a ZOYI ZT98 model, but illustrates common multimeter operations.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official ZOYI website or contact your retailer. Keep your purchase receipt as proof of purchase.
