Wiring reference and required hardware versions for connecting a FINCH III display to a Liquid Controls LCR.iQ register.
Titan Logix + LCR.iQ
Integration Overview
Automated Tank Level Verification, Built In
FINCH III integrates with third-party devices such as the Liquid Controls LCR.iQ register, enabling automated tank level verification and built-in overfill protection directly through the register. FINCH III communicates with the LCR.iQ using either RS-232 or RS-485 serial communication protocols—refer to the wiring diagrams below for the appropriate connection details.

FINCH III + LCR.iQ RS232 Configuration (wiring diagram)
FINCH III integrates with third-party devices such as the Liquid Controls LCR.iQ register, enabling automated tank level verification and built-in overfill protection directly through the register.
FINCH III communicates with the LCR.iQ using either RS-232 or RS-485 serial communication protocols. Refer to the wiring diagrams below for the appropriate connection details.
FINCH III Required Hardware
- FINCH III v2.9.11 or higher
- LCR.iQ v1.8.x or higher
FINCH III + LCR.iQ RS485 Configuration (wiring diagram)
FINCH III integrates with third-party devices such as the Liquid Controls LCR.iQ register, enabling automated tank level verification and built-in overfill protection directly through the register.
FINCH III communicates with the LCR.iQ using either RS-232 or RS-485 serial communication protocols. Refer to the wiring diagrams below for the appropriate connection details.
FINCH III Required Hardware
- FINCH III v2.9.11 or higher
- LCR.iQ v1.8.x or higher