This module has 16 two pole relays arranged as an 8×2 matrix. The matrix may be operated and wired individually for up to 16 8×2’s per chassis, or jumpered to the backplane to form up to a 128×2 two pole matrix. It is available with Type S or LT reed relays for high speed, long life application. These modules are usually used for 2 wire matrix applications where any number of 2 wire signals must be switched between either of 2 pieces of equipment.