Alpha-American 7160C https://www.alpha-american.com/p-alpha-7160c.html
Networking guide - https://www.alpha-american.com/9700-0112.html
- Pinout on page 27 of this PDF
Protocol guide - https://alpha-american.com/p-alpha-communications-protocol.html
- See examples - very helpful!
Notes:
Internal jumpers
- RS-232 or RS-485 selector
- 5v output on pins 1 & 6