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SEALEVEL | USB Digital

SeaDAC Lite REL-4 Kit

Now includes NABL Calibration Certificate.

The SeaDAC Lite REL-4 Kit (8114-KT) is a USB-powered digital interface adapter designed to control and monitor four dry-contact Reed relay outputs. Engineered for internal USB connection, it’s ideal for low-current switching applications in embedded or industrial systems where space-saving and durability are key..

  • Detail
  • Special Features
  • Specification

The SeaDAC Lite REL-4 Kit offers reliable control of four Reed relay outputs through a direct internal USB interface. Reed relays provide long-life, dry-contact switching, making them perfect for low-current signal control in embedded or automation systems. Each relay channel includes its own discrete common, allowing independent circuit connections.

This USB module is powered directly from the host, with no external power supply required. Designed around Sealevel's "Porthole" footprint, it allows modular expansion inside industrial PCs and custom enclosures. Its compact design (2.9" x 2.5") and removable terminal blocks simplify both installation and field wiring.

Backed by SeaMAX software, the 8114-KT supports smooth integration into Windows and Linux applications through a robust API.

  • 4 Reed Relay Outputs – ideal for low-current switching

  • Discrete Common for Each Relay – improved wiring flexibility

  • USB Bus-Powered – no need for external power adapters

  • LED Status Indicators – real-time monitoring of relay activity

  • SeaMAX Software Support – works on Windows & Linux

  • Porthole Mounting Design – standardized footprint for modular integration

  • Internal USB Connection – via 2mm 4-pin Molex header

  • Compact Dimensions – fits easily into custom enclosures

  • Optional Extended Temp Range – suitable for rugged use cases

Parameter Details
Model Number 8114-KT
Number of Outputs 4 Reed Relay Outputs
Relay Type Dry Contact, Long-Life Reed Relays
Host Interface USB (Internal, 2mm 4-pin Molex)
USB Specification USB 1.1 Compliant; 2.0 Compatible
Power Requirement +5V @ 500mA (USB Bus-Powered)
Operating Temp 0°C to +70°C (Optional: -40°C to +85°C)
Storage Temp -50°C to +105°C
Humidity 10–90% RH, Non-Condensing
Dimensions 2.9" (L) x 2.5" (W) x 0.8" (H); 1.6" incl. terminals
Mounting Porthole Format (3.2" x 3.1" footprint)
Software SeaMAX Suite for Windows & Linux