The Contemporary Controls EISK8-100T Skorpion Switch is a compact, eight-port unmanaged Ethernet switch built for control panel installations in building automation, BACnet/IP, and industrial control networks. Every port operates at 10 or 100 Mbps with auto-negotiation of speed and duplex, and Auto-MDIX accepts straight-through or crossover cabling without configuration. Powered from 10-36 VDC or 24 VAC with redundant power inputs and a rugged metal enclosure, the EISK8-100T is engineered to survive the noisy, vibration-prone conditions of mechanical rooms and industrial control panels.
› Plug-and-Play Operation
No configuration, no console port, no learning curve. Auto-negotiation sets each port's data rate (10 or 100 Mbps) and duplex automatically. Auto-MDIX accepts straight-through or crossover cables. Apply power, connect cables, and the switch is operational.
› Industrial-Grade Build
Rugged metal enclosure with a metal DIN-rail clip, IP30 protection, and 0°C to 60°C operating range. Redundant primary and backup power inputs accept either AC or DC. UL 508 Listed for industrial control equipment and CE marked for international projects.
| Specifications | |
|---|---|
| Ports | 8 × Shielded RJ-45 |
| Data Rates | 10 / 100 Mbps (10BASE-T / 100BASE-TX) |
| Switching | Store-and-forward, non-blocking, full wire-speed |
| Auto-Negotiation | Speed and duplex per port |
| Auto-MDIX | Yes (straight-through or crossover cabling) |
| Flow Control | PAUSE (full-duplex) / Backpressure (half-duplex) |
| Segment Length | 100 m (max) per port |
| Standards | ANSI / IEEE 802.3 |
| Power Input | 10-36 VDC, 2 W or 24 VAC ±10%, 3 VA, 47-63 Hz |
| Redundant Power | Yes (primary HI + backup HIB inputs) |
| Power Connector | 4-pin removable terminal block (16-22 AWG solid / 16-18 AWG stranded) |
| Reverse-Polarity Protection | Yes |
| LEDs | Power, Link/Activity per port, Speed per port |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C |
| Humidity | 10-95%, non-condensing |
| Protection | IP30 |
| Mounting | TS-35 DIN-rail (35 mm) |
| Dimensions (W × H × D) | 41 mm × 100 mm × 95 mm (1.61 in × 3.94 in × 3.73 in) |
| Weight | 1 lb (0.45 kg) shipping |
| Enclosure | Aluminium / metal |
| Compliance | UL 508 Listed, c-UL Listed, CE Mark, RoHS, EN55032, EN55035, CFR 47 Part 15 Class A |
| Warranty | 5-year manufacturer warranty |
Frequently Asked Questions
Does the EISK8-100T require any configuration before use?
No. The switch is fully plug-and-play. Auto-negotiation sets the data rate and duplex on each port automatically based on the connected device, and Auto-MDIX handles either straight-through or crossover cabling without manual selection. There is no console port, no IP address, and no setup software to install.
Can the switch be powered from a 24 VAC transformer shared with other BAS devices?
Yes. The EISK8-100T uses a half-wave rectified low-voltage power supply, which allows it to share a 24 VAC source with other 24 VAC/VDC building automation control devices on the same transformer. Verify the transformer's VA rating supports the combined load (the switch consumes 3 VA at 24 VAC).
What is redundant power and how do I wire it?
The 4-pin removable power connector accepts a primary input (HI / COM) and a backup input (HIB / COM). If the primary source fails, the backup automatically maintains switch operation with no link drop. Either input independently accepts 10-36 VDC or 24 VAC ±10%, so you can mix sources (for example, 24 VAC primary with a 24 VDC battery backup).
Is the EISK8-100T suitable for BACnet/IP networks?
Yes. The EISK8-100T is a Layer 2 unmanaged Ethernet switch and supports any IP-based protocol, including BACnet/IP, Modbus TCP, KNX/IP, EtherNet/IP, and standard TCP/IP. As an unmanaged switch it does not provide VLANs, QoS, or managed features - if your BACnet/IP segment requires those, choose a managed switch from the Contemporary Controls EICP or EISK-M family instead.
How do I know which ports are running at 10 Mbps versus 100 Mbps?
Each port has two LEDs built into the RJ-45 connector. The top LED (Speed) glows solid green when the port is linked at 100 Mbps and is unlit when linked at 10 Mbps. The bottom LED (Link/Activity) glows solid green when a link is established and flashes during data transmission. A solid Power LED on the front confirms the switch itself is energized.
Backed by Contemporary Controls' five-year manufacturer warranty against defects in materials and workmanship from the original ship date. UL 508 Listed and c-UL Listed for industrial control equipment, CE marked, and RoHS compliant for use in commercial, industrial, and international projects.
- Sub-Category:
- Unmanaged Switches
