ZOYI Verified on hardware
ZOYI ZT-5B app
Use your ZOYI ZT-5B with TestNMeasure: a live Bluetooth readout, graph, logging, CSV export and guided test sequences. The ZT-5B is a slim, auto-ranging True RMS meter with a 6000-count display and Bluetooth.
iOS and Android, beta this winter.
Hardware status
Works with TestNMeasure
| Brand | ZOYI |
|---|---|
| Model | ZT-5B |
| Connection | Bluetooth LE |
| Status | Verified on hardware |
| The meter | Slim handheld, 6000 counts, True RMS. Live readout. |
| In our shop | ZOYI ZT-5B in the TestNMeasure shop |
Live readings from a real ZT-5B were decoded by the app's ZOYI driver and matched the meter's own display: DC volts, including negative values, and the idle AUTO screen. The other functions, and the same run on Android, are still to be checked one by one.
What works today
The app's ZOYI driver reads the ZT-5B's live readings, and on a real meter they matched the meter's own display. On top of the readout you get the stability bars, a live graph, hold, REL and min/max/avg, all in the app. Capture a reading with one tap, or record over time with notes, photos and voice notes. Everything works offline.
Connect in three steps
- Turn the meter on.
- Press the power button briefly, until the Bluetooth symbol shows on the meter's display. A second short press turns Bluetooth off again.
- In the app, open the device chip and pick Bluetooth DMM.
After a dropped connection the app reconnects to the last meter. The ZT-5B switches itself off after 15 minutes without use; for a long recording, hold NCV while you turn the meter on to cancel the auto power off, as its manual describes.
What the meter measures
According to its manual, the ZT-5B measures DC and AC voltage up to 600 V, resistance up to 60 MΩ, continuity, diode, capacitance up to 6 mF, frequency up to 10 MHz, temperature from −20 to 1000 °C, and current from mA up to 10 A. It picks voltage or resistance by itself, and shows a voltage once it is above 0.8 V. It also has NCV and a flashlight. On the meter, SEL/NCV changes the function and the hold button holds the reading or zeroes the capacitance reading.
The meter sends its reading and unit about three times a second, and nothing else. The ZOYI driver follows the protocol of the maker's own app, which covers these functions.
Not verified yet
The first hardware run confirmed DC volts, including negative values, and the meter's idle AUTO screen. Still to be checked against the meter, one by one: each other measuring function, and the same run on Android. Until then, treat those as written to the protocol, not as tested. The meter has no remote control, so its function, range and hold cannot be set from the phone.
What it does and doesn't do (yet)
| What it does | Plan |
|---|---|
| Finds supported Bluetooth meters nearby and lists them, with a clear path when Bluetooth or its permission is missing. | Free |
| Tap a result to connect; the meter becomes the active instrument and live readings start. | Free |
| Reconnects to your last meter on launch and after drops, and always shows the connection state. | Free |
| Keeps a list of your instruments with names you choose, so every reading is tied to the meter that took it. | Free |
| A simulated meter lets you try the whole app without hardware; it is labelled DEMO everywhere. | Free |
| Type the reading from any instrument; typed values are marked as manual. | Free |
| A large readout that shows which digits have settled; OL and UL are shown as OL and UL, never as a number. | Free |
| Swipe the readout to a live graph with min and max lines, pan and zoom. | Free |
| Hold freezes the displayed reading and statistics in the app, independent of the meter's own HOLD. | Free |
| Shows the running minimum, maximum and average since the last reset, with the sample count. | Free |
| Shows rolling averages over the last 5, 30 and 60 seconds. | Free |
| REL shows the difference from a stored reference, for example to null out test-lead resistance. | Free |
| Five stability bars show when a reading is steady. | Free |
| A landscape layout for the meter and run screens. | Free |
| Keeps the screen on while you measure, run a test or record. | Free |
| One tap saves the current reading, with an Undo. | Free |
| Log sessions hold captures and time-series recordings, and recording continues with the screen locked. | Free |
| Add a text note and a short label to any capture. | Free |
| Attach up to 5 photos to a capture. | Free |
| Record a voice note of up to 2 minutes on a capture. | Free |
| Scale readings with a factor and an offset, for clamp adapters, shunts and probe dividers; the raw reading is kept. | Free |
| Search and filter your history; deleted items stay in Recently deleted for 30 days. | Free |
| Review a session as a full graph with pan and zoom, statistics and its captures. | Free |
| Auto-record saves a capture when the reading becomes stable. | Free |
Not yet, or not planned
- One live Bluetooth meter at a time for now; two meters at once (voltage and current, with power) is coming.
Questions
Does the ZT-5B app work on Android?
Not yet. The ZOYI driver is in the iPhone app first, and the hardware check was done there. We will mark Android here when it has been run against the meter.
Can I export ZT-5B readings to Excel?
CSV export is free and opens in Excel. Excel test reports are free too.
Can I change the ZT-5B's function from the phone?
No. The ZT-5B only sends its readings over Bluetooth, so you set the function on the meter. The app follows what the meter sends.
Does it work offline?
Yes. Connecting to the meter, capturing, templates, test runs, the calculator and every export work without a network.
Is the ZT-5B supported?
Yes, for live readings: the first hardware run matched the meter's display. The list of what is still to be verified is above.
ZOYI and Zotek are trademarks of their owner; TestNMeasure is not affiliated with or endorsed by Zotek.
Coming to iPhone and Android.
iOS and Android, beta this winter.
Questions or a meter to suggest? Mail support@testnmeasure.app.
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