A-36 Micro-Tech 9101/9201 Reference Manual, Rev J Thermo Fisher Scientific
The board options are as follows.
DC Input Board
or
Opto-22 Input Board
Install in expansion slot J6 on the motherboard. Use UL 1015 wire,
16AWG / 1 sq.mm or smaller
This is an optional board with three inputs (inputs #3–5).
Type: Current sourcing to common ground. Designed for dry-contact
input. Rated: 24VDC, 5mA typical. Input function is assigned by user.
Part number = 100785
Digital Input
Expansion
Boards