Auto‑Maskin – RK‑66 – DCU 305 Interface Module

The Auto‑Maskin RK‑66 (PN 75410) is a DIN‑rail interface module designed for use with the DCU 305 engine controller family by Auto‑Maskin/Wärtsilä. This essential module provides 12 digital switch inputs, 5 analog inputs, and 2 speed sensor interfaces—mounting directly on the DCU 305 to offer seamless connectivity and diagnostics for marine and industrial engine systems.  

Key Features:

• Model / PN: RK‑66 (Interface Module for DCU 305) ()

• Inputs: 12 switch/digital, 5 analog, 2 speed sensing (e.g., from pulse generators)  

• Mounting: DIN‑rail; connects directly to DCU 305 controller (via connectors P1/P2)  

• Purpose: Mandatory terminal interface kit when installing DCU 305 series R2/R3 controllers  

• Part Number: 75410 (sometimes shown as 1075410 in aftermarket listings)  

• Weight: Approx. 800 g; low-profile design for control cabinet space efficiency  

• Industry Use: Marine, generator sets, propulsion engine automation