Trade Discount 25%
Active Data Bus Hub RS-485 4 Managed Branches Ness
Ness active data bus hub features RS-485 output, 4 managed branches and EOL termination. Ideal for data bus wiring.
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Alternatively Known As: Ness Active Data Bus Hub, M1 Data Bus Hub Retrofit, ELK-M1DBHR, RS-485 Data Bus Splitter
Technical Specifications
- Model: M1DBHR
- Ness SKU: 101-206
- Bus Interface: RS-485
- Inputs: 4-position elevator screw terminals
- Outputs: 4-position elevator screw terminals
- Branch Capacity: Four managed RS-485 branches
- Cable Capacity: Up to two parallel home-run cables per branch, eight total
- Wiring: Standard four-conductor home-run cable
- Current Draw: 30mA nominal plus 20mA per active RS-485 branch driver; approximately 110mA with four active branches
- Maximum Bus Length: 1,219m for the RS-485 bus or any individual branch
- Termination: 120 ohm EOL termination jumpers for input and four branches
- Mounting: Supplied circuit-board rails for compatible SWB boxes and M1 enclosures
- Dimensions (H x L x W): 15mm x 124.5mm x 70mm
- Weight: 0.14 kg
Key Features
- Splits the main M1 RS-485 data bus into four managed branches
- Supports up to eight home-run cables across the four branches
- Provides end-of-line termination for branch operation and supervision
- Designed for retrofitting older alarm panels with multiple home-run data cables
- Allows an additional hub to be connected in parallel to expand capacity
- Compatible with standard four-conductor keypad and data-bus wiring
- Includes mounting rails for installation inside compatible enclosures
Professional Installation Requirements
- Installation, wiring, termination and enrolment should be completed by a suitably qualified security-alarm technician. Connect only to the compatible M1 control-panel data bus or an appropriately specified 12V DC auxiliary supply, following the manufacturer’s wiring and termination instructions.
Applications
- Retrofitting Ness M1 control panels with multiple home-run keypad cables
- Distributing RS-485 data-bus wiring to security keypads and bus devices
- Commercial and residential intruder alarm installations
- Expanding the number of managed data-bus branches in existing alarm systems
Standards & Compliance
- AS/NZS 2201.1:2007 — applicable to the design, installation, commissioning and maintenance of intruder alarm systems; product-specific certification is not stated by Ness
- AS/NZS 3000 — relevant to electrical installation practices where applicable; product-specific compliance is not stated by Ness
Environmental Benefits
- Retrofit design can extend the service life of existing M1 alarm panels, wiring and bus devices, reducing replacement waste
- Low-voltage operation avoids a direct mains connection at the module
- Ness publishes RoHS compliance documentation for its product range
Warranty Information
Ness manufactured or supplied products are covered by a 3-year warranty from the date of purchase, unless otherwise specified. Warranty claims are subject to Ness Corporation’s published terms and conditions.
Available Now
Available through Ness Corporation and authorised Australian security-system distributors.
