The National Instruments ER-8 is a versatile electromechanical relay designed for general-purpose applications in testing and control environments. With the part number 777080-01, this device features eight independent single-pole double-throw (SPDT) relays that can be operated either from a common signal or independently via eight provided digital lines. The ER-8 is compatible with NI digital devices, including Multifunction I/O and LabVIEW systems, streamlining integration into both laboratory and industrial scenarios.

This relay is engineered to ensure reliable operation, incorporating a break-before-make mechanism that prevents short circuits by isolating contacts during switching. It offers various connection options, including normally open and normally closed configurations. The maximum working voltage is 250 Vrms, with an operate time of 10 milliseconds and a release time of 5 milliseconds. The device is equipped with 50-pin male ribbon cable front connectors (DIO-24 and DIO-32) and 26-pin male ribbon cable internal connectors for easy interfacing.

Visual indicators are provided in the form of one power LED and eight channel status LEDs, allowing operators to quickly assess the device's status. The ER-8 can be daisy-chained with the ER-16 to create a comprehensive 24-relay block using the NB7 cable. It supports dual power options, utilizing either the internal supply of a connected DAQ module or an external power source. The physical dimensions of the ER-8 are 6.9 x 2.05 x 4.82 inches, and it operates effectively within a temperature range of 0° to 50°C, with a storage range from -55° to 150°C and a relative humidity tolerance of 5% to 90% non-condensing.

The NI ER-8 is backed by a three-year warranty, and user and maintenance manuals are available for download to facilitate easy operation and upkeep. For pricing information, please contact a National Instruments sales representative.