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SeaI/O-530M is a robust RS-485 Modbus RTU module featuring 16 optically isolated inputs and 16 open-collector outputs, engineered for high-reliability industrial monitoring and control applications..
The SeaI/O-530M is a multifunction I/O expansion module that connects via RS-485 and communicates using the Modbus RTU protocol. It features 16 optically isolated digital inputs that accept 5–30VDC signals, making it ideal for noise-prone industrial environments. The isolation protects control electronics from voltage transients and ground loops.
It also offers 16 open-collector outputs capable of high-current sinking and ideal for controlling devices such as LEDs, solenoids, and DC motors. Each output is equipped with a flyback diode, protecting the circuit from inductive load switching. Inputs are grouped in 4-bit commons, while outputs are organized in 8-bit ports, simplifying system wiring using removable terminal blocks.
The unit is powered via a 9–30VDC source and supports seamless integration with Sealevel’s SeaMAX API for Windows and Linux systems. The SeaI/O-530M is housed in a durable enclosure and can be scaled using SeaI/O N-series modules for up to 246 expansion nodes.
16 optically isolated inputs (5–30VDC range)
16 open-collector outputs with flyback diode protection
High-current sinking output design
RS-485 Modbus RTU interface
Inputs grouped in 4-bit segments for simplified wiring
Outputs grouped in 8-bit ports with shared high/low voltage
Removable 3.5mm terminal blocks
Powered via 9–30VDC input
SeaMAX API support for Windows & Linux
Expandable up to 246 SeaI/O modules
Interface: RS-485 (Modbus RTU)
Digital Inputs: 16 optically isolated (5–30VDC)
Digital Outputs: 16 open-collector outputs
Output Protection: Flyback diode (for inductive loads)
Power Requirement: 9–30 VDC @ 1.4W
Operating Temperature: -25°C to 85°C (-13°F to 185°F)
Storage Temperature: -50°C to 105°C
Humidity Range: 10–90% RH (non-condensing)
Dimensions: 7.5" (L) x 5.1" (W) x 1.3" (H)
Enclosure: Included
Software Support: SeaMAX API (Windows & Linux)
Expansion Capability: Supports up to 246 N-series modules