Relay Timer R4X: 4-Channel Serial Controller

Key Features

• Relay Timer R4X is programmable timer software for setting timing features of relay.
• It works with 4-channel relay controller boards of National Control Devices (NCD) .
• Relay can be turned on/off manually and automatically according to powerful schedule setting.
• It supports Com Port and Network connection between PC and relay board.
• The connection status is detected and shown continuously.

Technical Specifications

• **Publisher:** Serialporttool.com
• **License:** Shareware
• **Operating System:** Windows 7, Windows 8, Windows 10, Windows 11
• **Last Updated:** October 15, 2025
• **Category:** Home And Leisure / Hobbies