Express Systems will have an EARLY CLOSING Thursday, June 19th, 2025 and will be CLOSED June 20th, 2025 in observance of Juneteenth. We will resume regular business hours Monday, June 23rd, 2025 at 9:00am EST.
Advantech’s RS-485 I/O Modules, ADAM-4000 series, are the perfect choice for establishing a cost-effective remote I/O system. Customers can benefit from ADAM-4000 modules through its simple wiring using only two wires to communicate with their controller or other RS-485 devices. ADAM-4000 modules use the EIA RS-485 communication protocol; the industry's most widely used bi-directional, balanced transmission line suitable for industrial environments.