APPA Not supported Open protocol, no driver yet
APPA 157B
APPA 157B cannot be read live over Bluetooth in TestNMeasure yet. You can use it with the app today by typing its readings by hand; they are marked manual.
iOS and Android, beta this winter.
Status in TestNMeasure
| Brand | APPA |
|---|---|
| Model | 157B |
| Type | Clamp meter |
| Link | Bluetooth LE built in |
| State | Not supported Open protocol, no driver yet |
| Reason | Its Bluetooth protocol is documented or decoded by others; the app has no driver for it yet. |
The app cannot read this meter live over Bluetooth. You can still type its readings by hand.
APPA 157B at a glance
| Display | 10,000 |
|---|---|
| True RMS | Yes |
| Measures | AC current only, to 1000 A, power functions as the 150B series |
| Safety rating | CAT III 1000 V / CAT IV 600 V |
| The maker's own app | iPhone, Android |
Sources: Product page · Manual · uk.rs-online.com · read 3 November 2026
Use it with TestNMeasure today
Add it as a manual instrument and type each reading into the same step. Typed values are marked manual wherever they appear, in reports too.
Want it read live? Ask us to add it We choose the next meter from these requests.
Questions
Does the APPA 157B give live readings in TestNMeasure?
No. Its Bluetooth protocol is documented or decoded by others; the app has no driver for it yet. So the 157B does not give live readings in the app yet.
Can I use the APPA 157B with TestNMeasure today?
Yes. Add it as a manual instrument and type each reading into the same step; typed values are marked manual wherever they appear. Your instrument list keeps it by name.
How do I ask for the APPA 157B to be added?
Use the “Ask us to add it” link on this page and we get the make and model. We choose the next meter from these requests.
APPA is a trademark of its owner; TestNMeasure is not affiliated with or endorsed by APPA.
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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