UL 864 Recognized Component
Contemporary Controls recently re-qualified the EIS Ethernet Interconnect Switch series to comply with the requirements of Underwriters Laboratories (UL) 864 Control Units and Accessories for Fire Alarm Systems 9th Edition. All new fire alarm and smoke control systems being installed claiming UL 864 compliance must comply with this latest edition.
Click here to view the UL listing for the EIS series.
The UL recognized component mark is rarely seen by the customer, but is often part of a larger end-product that is UL Listed by the fire alarm system supplier. For an end-product to be UL Listed, the product is tested by UL to determine if it meets the requirements established by UL’s published Standards of Safety. A UL recognized component has already been evaluated and tested in accordance with UL’s component safety standards, streamlining the qualification process for the end-product.
By having the fire alarm system supplier specifying a Contemporary Controls’ EIS Ethernet switch to be used within the system, the supplier is not required to perform additional testing on this component. Several fire alarm and security firms have already specified the EIS series as part of their system thereby improving their time-to-market.
Components that bear the UL Recognized Component mark are separately covered under UL’s Follow-Up Surveillance program to ensure continued compliance and prevent unpleasant surprises when an end-product is inspected.UL 864 9th Edition governs the safety of fire alarm systems and equipment, including smoke detectors, sprinkler systems and fire alarms in accordance with these standards:
NFPA 12, Carbon Dioxide Extinguishing Systems
NFPA 12A, Halon 1301 Fire Extinguishing Systems
NFPA 13, Installation of Sprinkler Systems
NFPA 15, Water Spray Fixed Systems for Fire Protection
NFPA 16, Installation of Foam-Water Sprinkler and Foam-Water Spray Systems
NFPA 17, Dry Chemical Extinguishing Systems
NFPA 17A, Wet Chemical Extinguishing Systems
NFPA 70, National Electrical Code
NFPA 72, National Fire Alarm Code
NFPA 92A, Recommended Practice for Smoke-Control Systems
NFPA 92B, Guide for Smoke Management Systems in Malls, Atria, and Large Areas
NFPA 2001, Clean Agent Fire Extinguishing Systems
EIS Features
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Product Overview
The EIS series provides a solution for those industrial applications requiring a larger network diameter and greater throughput. Models exist that support both twisted pair and fiber optics.
All models of the EIS series segment the Ethernet network into separate collision domains. The switch functions as a "bridge" between various data links creating a larger network diameter than can be achieved with repeating hubs. Each copper port automatically negotiates with its attached device the data rate (10 or 100 Mbps) and duplex (full- or half-) for that port. The flow control mechanism is also negotiated. For Full-duplex segments, the PAUSE scheme is used. For half-duplex segments, the backpressure approach is automatically invoked. The switch learns the port locations of Ethernet devices by reading Ethernet frames and observing source addresses. The switch then creates and maintains a table of source addresses and corresponding port assignments. From that time on, traffic is restricted to only those ports involved in a transmission. This allows for improved throughput since simultaneous transmissions can now be initiated on those ports. Table values are aged to automatically accommodate changes to the field wiring.
If a broadcast, multicast or unicast transmission to an unknown destination is received on a port, all other ports are flooded with the transmission.
The EIS6 models accommodate applications requiring a fiber backbone. These combine the benefits of switching technology and fiber optics, making them ideal for applications where longer networking distance — up to 15 km (single-mode) — and immunity to EMI/RFI is important. These benefits result in decreased downtime, fewer outages and improved reliability.
The EIS6 models have 6-ports, with a mix of four 10/100 Mbps twisted-pair copper ports and two 100 Mbps multimode or single-mode fiber ports.
All units are equipped with key features including wide-range, low-voltage AC or DC power requirements of the network wiring. They can be DIN-rail or panel mounted. To aid troubleshooting, the EIS series incorporates LED indicators for data rate, activity, link integrity and power.
Ordering Information
Copper-Only Model |
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| Model | RoHS | Description | Purchase |
| EIS8-100T |  |
Eight-port 10BASE-T/100BASE-TX switching hub | |
Copper Plus Fiber Models (Six Ports) |
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| Model | RoHS | Description | Purchase |
| EIS6-100T/FC | |
Four-port 100BASE-TX/two-port 100BASE-FX (multimode) switching hub with SC connectors | |
| EIS6-100T/FCS | |
Four-port 100BASE-TX/two-port 100BASE-FX (single-mode) switching hub with SC connectors | |
| EIS6-100T/FT | |
Four-port 100BASE-TX/two-port 100BASE-FX (multimode) switching hub with ST connectors | |
Our staff of engineers is available to address any issues you may be having.
Please visit our contact page for more information.