WB-MAI6 hardware revisions

The batch number (Batch No.) is shown on a label on the side of the enclosure or on the printed circuit board.

Revision	Batches	Production period	Changes from the previous revision
1.7	v1.7E - ...	09.2026 - ...	Minor circuit change: 3.3 V LDO replacement
1.7	v1.7D/1, v1.7D/2, v1.7D/3	06.2026 - 08.2026	Fixed measurement errors caused by high terminal-block contact resistance ERRMAI608
1.7	v1.7A, v1.7A/1, v1.7B, v1.7C, v1.7C/1, v1.7C/2, v1.7D	10.2024 - 06.2026	Optocouplers replaced with digital isolators
1.6	v1.6A, v1.6B, v1.6C, v1.6C/1, v1.6D, v1.6E, v1.6F, v1.6F/1	06.2024 - 09.2025	ADS1120IPW ADC Minor internal changes
1.5	v1.5A, v1.5A/1, v1.5B, v1.5B/1, v1.5B/2, v1.5C, v1.5C/1, v1.5D	08.2023 - 05.2024	ADS1120IRV ADC Four-layer PCB
1.4	v1.4A	06.2023	ADS1120IPW ADC
1.2	v1.2A, v1.2A/1, v1.2B, v1.2B/1, v1.2C, v1.2D, v1.2E	12.2022 - 05.2023	ADS1120IPW ADC
1.2	v1.2A/T	11.2022	First batch — firmware update required!