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Part# 8115-KT

(SeaDAC Lite REL-4C Kit)

USB to 4 Form C Relay Outputs Digital Interface Adapter

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Control and monitor four Form C (SPDT) relay outputs via an internal USB connection with the 8115-KT. The high-current Form C relays can switch up to 6A loads at 250VAC and up to 5A at 60VDC. Each Form C relay has a discrete common and can be wired for either normally open or normally closed operation. Status LEDs display I/O activity and field wiring is simplified via 3.5mm removable terminal blocks.

The SeaMAX software suite supports the SeaDAC Lite family and is designed to work with third party applications via the SeaMAX API. Sealevel's SeaMAX software drivers and utilities make installation and operation easy using Windows and Linux operating systems.

The 8115-KT is USB bus powered, so no external power supply is needed. A 2mm 4-pin Molex vertical header provides an internal USB connection to your host system. Standard operating temperature range of SeaDAC modules is 0C to +70C and extended temperature range (-40C to +85C) is optional.

The intelligent Porthole design is perfect for expanding industrial computing platforms using only an internal USB connection. iPorthole modules include an intelligent USB I/O board with Sealevel's innovative Porthole mounting plate for installation in a Relio or custom enclosure. Simply design the 3.2" x 3.1" Porthole mounting footprint into your enclosure to mix and match iPorthole USB I/O modules for maximum configurability. The Porthole footprint offers a standardized method for interfacing real-world I/O connections.
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Brand/Family Microsoft
Host Interface(s) USB
# of Ports 4
Digital I/O Form C Relay Outputs
Number of Inputs/Outputs 4 outputs
USB Specification 1.1 Compliant, 2.0 Compatible
Power Requirement +5V @ 500mA
Output Power DC 210W, AC 1200 VA max.
Contact Voltage 60VDC max., 250VAC max., (5VDC min.)
Contact Current AC 6A max.
Contact Current DC <30 VDC @ 5A max., >30 VDC @ 700mA max., (100mA min.)
Contact Operate Time 10ms max.
Contact Release Time 5ms max.
Operating Temperature 0 - +70C
Extended Temperature Call for Options
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
Dimensions 3.2" (L) x 3.1" (W) x 1.1" (H)
  • • 4 SPDT Form C relays
  • • Field wiring is simplified via removable 3.5mm terminal blocks compatible with 16-30 AWG wire
  • • Optional removable spring-clamp terminal blocks available
  • • Status LEDs display I/O activity and USB connection
  • • Powered by USB connection
  • • Sealevel software supports Windows 7/Vista/XP/2000 operating systems
  • • Includes Molex 4-pin vertical 2mm locking header for USB connection (Mating connector Molex# 35507-0400)

USB Device Cable
USB Device Cable


The Digital I/O Handbook
The Digital I/O Handbook


Screw Terminal Blocks
Screw Terminal Blocks


Internal USB Device Cable
Internal USB Device Cable


Internal USB Device Cable
Internal USB Device Cable


The Digital I/O Handbook (*Free)
The Digital I/O Handbook (*Free)


Spring Clamp Terminal Blocks
Spring Clamp Terminal Blocks


Internal USB Device Cable
Internal USB Device Cable


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