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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
The Black Box ICD400A is a compact serial interface converter designed to bridge asynchronous RS232 communication with RS422 or RS485 networks. This device is essential for extending serial data transmission distances and enabling multi-drop configurations, commonly required in industrial automation, SCADA systems, and security surveillance deployments where RS232 devices need to interface with RS422/485 infrastructure. Its robust design ensures reliable data integrity over longer cable runs than RS232 alone permits.
This converter is compatible with any standard asynchronous RS232 serial device, including many industrial controllers, sensors, and legacy security equipment. It translates RS232 signals to either RS422 or RS485, supporting full-duplex (RS422) or half-duplex (RS485) communication modes. It is suitable for integration with various network video recorders (NVRs) and video management systems (VMS) that utilize RS422/485 for PTZ control or alarm input/output.
Installation involves connecting the RS232 device to the 5-position terminal block on one side and the RS422/485 network to the other. DIP switches on the unit allow for easy configuration of RS422/485 mode (2-wire RS485, 4-wire RS485, or 4-wire RS422) and baud rate settings. Ensure proper termination is applied to the RS485 bus if using multi-drop configurations to prevent signal reflections and data errors. Power is supplied via the terminal block, typically requiring a 5VDC source.
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
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Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
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