The 50-527, 50-528 and 50-529 are a range of PCI single pole matrix cards supporting either 64 or 128 crosspoints using electro-mechanical relays. They are capable of switching voltages up to 300VDC/250VAC and current up to 2A. The modules are designed for switching medium voltage and power signals. The user signal connection is via a robust 37-pin D-Type connector that is fully supported by the wide range of Pickering Interfaces cable and connector accessories.