The following wiring diagrams are available for the ABH/ABX range:
Ambient ABX (Twin Module Current) - Wiring Diagram - https://www.reznor.co.uk/wp-content/uploads/2023/12/CP-ABX-AMB-TWIN-ON_OFF.pdf
What wiring diagrams are available for the ABH/ABX?
Information on wiring diagrams for Reznor products