Onyxx® LX B848 or B(P)848

Configurable Panel ASC Controller for RTU & AHU

The B848-LX panel mount controller is designed to manage equipment in most HVAC control systems with the ease of configuring built-in applications with a BACnet® monitor, like the freeware Onyxx® LX UI (requires separate special USB adapter), or a Niagara host. This application specific, BTL Certified automation controller includes an extremely flexible I/O set of 8 analog inputs, 4 analog outputs, and 8 digital outputs.


  • Configurable with factory pre-loaded applications for RTU, Heat Pump, and AHU equipment
  • 8 AI/BI’s, 4 AO’s & 8 BOs with local HOA switches for outputs
  • Native BACnet MS/TP
  • Supports 1 TZ100-LX or TZ200-LX room sensor.
  • Requires Onyxx LX USB to RS-485 adapter to program with Onyxx LX UI
  • BTL Certified as a B-ASC (BACnet Application Specific Controller) BACnet is a registered trademark of ASHRAE. ASHRAE does not endorse, approve, or test products for compliance with ASHRAE standards. Compliance of listed products to the requirements of ASHRAE Standard 135 is the responsibility of BACnet International. BTL is a registered trademark of BACnet International.
  • To order use part number: B848-LX or BP848-LX


This controller is designed to facilitate the control and management of HVAC equipment. Shipped with factory pre-loaded configurable applications provided for RTU, Heat Pump, and AHU requirements.