DLP-IOR4 DLP Design

DLP-IOR4 DLP-IOR4 LEAD-FREE USB-BASED LATCHING RELAY MODULE Applications: Features: - Data-Acquisition - 4 Latching Relays Control - USB Port Powered - Industrial/Process - USB 1.1 and 2.0 Compatible Interface Control - Small Footprint: 4.1 x 0.96 Inch PCB - Home Automation - Easy to Use with Single-Byte Commands - Robotics Can Utilize a Simple Terminal Emulator to Control All Functions 1.0 INTRODUCTION The DLP-IOR4 is a low-cost, easy-to-use relay module utilized for computer control of electrical or electronic equipment. Note: The relays used on the DLP-IOR4 are latching type relays. As such, the state of the relay will not change when power is removed from the module. All operational power is taken from the host PC via the USB port. 2.0 SPECIFICATIONS Each of the four relays on the DLP-IOR4 has the following specifications: Contact Ratings: 120W, 250VA Max Switching Voltage: 220VDC, 250 VAC Max Switching Current: 4A Max Carrying Current: 4A Note: The two sets of contacts for each relay were connected in parallel to achieve these ratings. Rev. 1.1 (September 2007) 1 DLP Design, Inc. 3.0 ABSOLUTE MAXIMUM RATINGS Stresses above those listed here may cause permanent damage to the DLP-IOR4: Operating Temperature: 0-70C Current on Any I/O Pin: 4A 4.0 WARNINGS Unplug from the host PC before connecting to the DLP-IOR4. Observe static precautions to prevent damage to the DLP-IOR4 module. 5.0 USB DRIVERS USB drivers for the following operating systems are available for download from the DLP Design website (