Spec Sheet

Macurco™
Modbus RS-485 Adapter
MRS-485
For use with Macurco 6-Series™ Detectors
Addressable Gas Detection and Control
The Macurco MRS-485 adapter is an accessory used to convert the 4-20mA analog signal from Macurco 6-Series
type detectors to a digital signal for use with multipoint addressable systems. The Macurco MRS-485 simply plugs
into the back of the detector and a single screw fastens it in place. The MRS-485 accepts the 4-20mA output and
is powered from the same connection as the detector. The MRS-485 has the ability to interface with Building
Automation Systems, Control Panels or other Control Devices that accept Modbus communications.
Features:
• The Macurco MRS-485 interfaces the detector power and 4-20mA output lines with a mounted connector
• The MRS-485 monitors sensor type, gas level and trouble status communications
from any of the Macurco 6-Series detectors
• Communication is on a Modbus serial line
• Commercial type enclosure to protect and support the electronics
• Tricolor LED indicates power, test and communication status
Installation
• Mounts behind the detector inside of a standard 4” x 4” electrical box
• Held in place on the back of the 6-Series detector with a single screw
• 8 bit dip switch address selector
• RS-485 termination uses 4 pin connector with jumper to select termination:
The user selects no termination or one of the two Modbus line termination options
• Communications connections include signal (A and B), common and shield terminals
• Intended for use in non-hazardous areas such as parking garages, warehouses or other commercial facilities
Manufactured by Aerionics, Inc. Sioux Falls, SD – Phone: [phone] – Email: [e-mail] – www.macurco.com
GAS DETECTION