AAON – OE391-12-A – Modular Service Tool SD Operator Interface

Main Features

• Manufacturer: AAON (under WattMaster/Orion Controls branding)  

• Model/MPN: OE‑‑A (also known as OE‑ Modular Service Tool SD)  

• Device Type: Handheld modular service tool / system operator interface (‑line × ‑character display)  

• Display & Input: ‑line by ‑character backlit display with ‑key membrane keypad; menu‑driven for simple configuration  

• Memory & Power: Includes  GB SD memory card, runs on  × AA batteries, plus can use external DC power supply  

• Connectivity: Equipped with mini‑DIN and RS‑ connectors for interfacing with various Controllers (VAV/CAV, VCM‑X, VCM, VCB‑X, RNE, SA E‑BUS, etc.)  

• Rugged Design: Durable black plastic housing with protective bezel, designed for field use  

• Primary Function: For viewing status, configuring parameters, adjusting setpoints, and updating E‑BUS module software on Orion control system controllers via handheld interface