D L P - I O R 4
LEAD-FREE
USB-BASED LATCHING RELAY MODULE
Applications :
- Data-Acquisition
Control
- Industrial/Process
Control
- Home Automation
- Robotics
Features :
- 4 Latching Relays
- USB Port Powered
- USB 1.1 and 2.0 Compatible Interface
- Small Footprint: 4.1 x 0.96 Inch PCB
- Easy to Use with Single-Byte Commands;
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:
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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.
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