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Measurement Computing DIO high voltage and relay USB product offerings include the USB-PDISO8 Series, USB-ERB Series, and USB-SSR Series. The USB-PDISO8 Series offers eight isolated AC or DC inputs and eight electromechanical relays in a single digital I/O system. The USB-ERB Series enables a PC or laptop to control eight to 24 electromechanical relays. The USB-SSR Series can monitor and control eight to 24 standard size solid state relay (SSR) I/O modules (relays sold separately). All devices in these series come in a heavy-duty metal enclosure with integrated mounting slots, which ensures that the devices are rugged enough for any DAQ application.

• 24 single-pole double-throw (SPDT) Form C electromechanical relays directly controlled by digital I/O lines
• Supports configurations as two banks of eight and two banks of four
• Onboard switches to configure the logic polarity (active high or low) and power-on state for each relay group.
• Switch settings can be read back with software.
• Screw terminals for field wiring connections with three connections to each relay – normally open (NO), normally closed (NC), and common (C).
• USB out and power out connections support powering and controlling multiple MCC USB devices that support daisy-chaining from one external power source and one USB port in a daisy-chain configuration.
• Rugged enclosure that can mount on a DIN rail or on a bench

The USB-ERB24 is powered by an external 9 V, 3 A regulated power supply that is shipped with the device.

• USB-ERB08: Eight single-pole double-throw (SPDT) Form C electromechanical relays directly controlled by digital I/O lines.
• USB-ERB24: 24 single-pole double-throw (SPDT) Form C electromechanical relays directly controlled by digital I/O lines.
• USB-ERB08: Supports configurations as two banks of four.
• USB-ERB24: Supports configurations as two banks of eight and two banks of four.
• Onboard switches to configure the logic polarity (active high or low) and power-on state for each relay group.
• Switch settings can be read back with software.
• Screw terminals for field wiring connections with three connections to each relay – normally open (NO), normally closed (NC), and common (C).
• USB out and power out connections support powering and controlling multiple MCC USB devices that support daisy-chaining from one external power source and one USB port in a daisy-chain configuration.
• Rugged enclosure that can mount on a DIN rail or on a bench
• The USB-ERB08 and USB-ERB24 are powered by an external 9 V regulated power supply, which is included.