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The SE1100 expansion board provides 4 SPDT relays that connect to the digital outputs of any SBC. With 4 relays combined into one integrated interface, the SE1100 saves time by eliminating the need to wire together individual relays. Each relay has normally closed (NC), normally open (NO), and common (COM) terminals. With an operating range of up to 50 feet (15 m), the SE1100 can be located near the load rather than near the single-board computer. The relays are optically isolated and have fuses and filters to protect against noise and transients. Each relay has an LED indicator to aid in system maintenance.

Features

• Four mechanical relays rated 6.3 A at 250 V AC or 24 V DC
  
• Opto-isolation between host SBC signals and SE1100 relays
  
• Relay status LED indicators
  
• Operates remotely at up to 50 feet (15 m)
  
• Interface voltage range from 5–24 V DC
  

The SE1100's relays are controlled through the high-current sinking or sourcing drivers of the host single-board computer. The simplicity of this interface allows you to add relay I/O to almost any output device. The relays are protected against overcurrents and voltage spikes that occur when switching inductive loads.

The SE1100 is powered by any 24 V DC power supply, and users can drive the relays using 5–24 V DC logic. Both the relays and LEDs are driven with unregulated DC.

Two-part quick-release pluggable connectors are standard on the SE1100. These durable terminals provide reliable connections, are DIN-rail mountable, and can accommodate up to 14-gauge wire.