METEROPTIC TOOLS — OPTICAL PROBE SELECTION CHECKLIST 01 / METER Meter brand, exact model, hardware or firmware version if known: Optical standard if known (IEC 62056-21 / ANSI C12.18 / other / unknown): Record meter front, model label and optical port photos privately. 02 / APPLICATION Authorized task: production testing / calibration / commissioning / diagnostics / maintenance / other. Confirm permission to access the meter and the intended software operation. 03 / HOST & INTERFACE USB-A / USB-C connection option / RS232 / BLE / Bluetooth SPP / not sure. For USB-C: confirm native connector or USB-A with adapter. Host device and operating system/version: Software/application and version: Communication settings (baud rate, data bits, parity, stop bits), if known: 04 / PROJECT Sample quantity: Project quantity: Destination market and required date: Required documents, exact model scope and acceptance criteria: 05 / SAMPLE RECORD Exact meter and host used: Handshake, intended operation and non-sensitive test logs: Result: confirmed in tested setup / not confirmed / requires follow-up. An optical standard, recognized USB device or supplier declaration alone does not establish meter compatibility. Do not share meter passwords, security keys or customer-confidential data. Model availability, detailed specifications and compliance documents must be confirmed before purchase.