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SeaI/O-570U-OEM is a board-only USB-based I/O module that combines 8 high-precision analog inputs, 8 optically isolated inputs, and 8 Form C relays—designed for embedded control and industrial automation using Modbus RTU or SeaMAX API..
The SeaI/O-570U-OEM is a compact, board-level USB I/O solution built for OEMs and embedded applications. It integrates the LTC1867 A/D converter to deliver eight 16-bit analog inputs, configurable for ±5V or ±15V ranges. These inputs support floating or ground-referenced signals and can operate in either bipolar or unipolar modes, ideal for sensors like thermistors, battery outputs, and transformer signals. A DIP switch enables +5V biasing for thermistor applications.
Alongside analog capabilities, the unit offers 8 optically isolated digital inputs that support 5–30VDC signaling with robust 3500V external isolation, ensuring safe operation in noisy industrial environments.
For output control, it features 8 Form C relays capable of switching up to 24W DC loads, configurable as normally open or normally closed. Removable terminal blocks simplify wiring, and the compact, board-only format makes it easy to embed into custom control systems or enclosures.
Communication is seamless via USB using industry-standard Modbus RTU or Sealevel’s SeaMAX API for custom software development. The device operates within a temperature range of 0°C to 50°C and can be expanded using SeaI/O N-series modules to meet broader application demands.
(8) 16-bit single-ended analog inputs with ±5V or ±15V ranges
(8) optically isolated digital inputs (5–30VDC, 3500V isolation)
(8) Form C relay outputs (24W DC switching capacity)
USB interface with SeaLATCH locking capability (standard cable compatible)
Software-selectable bipolar/unipolar analog modes
DIP switch-enabled bias voltage for thermistors
Designed for OEM and embedded integration (board only)
Supports up to 246 SeaI/O N-series expansion modules
Host Interface: USB
Analog Inputs: 8 (16-bit, ±5V/±15V, Bipolar/Unipolar)
Digital Inputs: 8 optically isolated (5–30 VDC, 6.2K Ohms)
Relay Outputs: 8 Form C relays (24W DC switching)
Operating Temperature: 0°C to 50°C
Storage Temperature: -20°C to 80°C
Humidity Range: 10–90% RH (Non-Condensing)
Power Requirement: 9–30 VDC @ 15W Nominal (30W Max)
Dimensions: 7.5" (L) x 5.1" (W) x 1.8" (H)
Board Only / Enclosure: Board Only
Communication Protocols: Modbus RTU / SeaMAX API
Expansion Capability: Supports up to 246 SeaI/O modules