The National Instruments PXI-2521 is a general-purpose switch module that features independent double-pole single-throw (DPST) armature relays. It is ideal for applications that require high-density switching, such as automated test equipment (ATE) loads or for controlling heaters, lights, and fans.

The PXI-2521 has 200 channels, each of which can be switched on or off independently. The relays have a maximum switching current of 10 A at 120 VAC or 240 VAC, and a maximum switching voltage of 250 VAC or 300 VDC.

The PXI-2521 is fully software programmable and supports onboard relay count tracking. It also features built-in protection against overvoltage, overcurrent, and short circuits.

The PXI-2521 is a great choice for applications that require high-density switching, such as ATE loads or for controlling heaters, lights, and fans. It is also a good choice for applications that require high reliability and accuracy.

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