Description
Relay expansion module that adds four dry-contact outputs to a Q-Controller gas detection system
The QEL BO-BOX-0 makes it easy to add more on/off control points to your Q-Controller without redesigning the whole panel. Each module gives you four additional relay outputs you can use to drive fans, strobes, horns, dampers, or other equipment, all managed from the Q-Controller touchscreen instead of scattered stand-alone controls.
Modules share the same 2-wire RS-485 network as your sensors, so you can drop them where they’re convenient in the field or panel and simply address them in the controller. A single Q-Controller can support up to 31 BO-BOX modules, for a total of 128 relay outputs, enough capacity for large parking garages, plants, and multi-zone facilities.
Key Features & Benefits
Simple Relay Expansion
Adds four relay outputs per module so you can turn more fans, alarms, and other devices on or off directly from the Q-Controller, instead of adding separate relay panels.
Scales for Large Projects
Supports up to 31 BO-BOX modules on a single Q-Controller, giving you as many as 128 relay outputs for larger garages, plants, or multi-level facilities.
Uses the Same 2-Wire Network
Connects over the same RS-485 2-wire communication loop as your QEL sensors and other I/O modules, reducing extra wiring and keeping install work straightforward.
Centralized Setup and Control
Relays are addressed and configured in the Q-Controller, so you can set which gas sensors or conditions trip each relay, adjust time delays, and make changes from one screen instead of at each device.
Dry-Contact Flexibility
Uses form-C dry-contact relays, so you can integrate with a wide range of equipment (fans, dampers, strobes, building automation inputs) without worrying about matching control voltages.
Notes
- Communication: RS-485 2-wire connection to Q-Controller
- Max BO-BOX modules per Q-Controller: 31 (up to 128 relay outputs)
- Compatible controller: QEL / ACI Q-Controller gas detection system
