The SR 64-1 provides 24 poles of switching through six, hermetically sealed, bifurcated relays. The relays contacts are gold plated and have a 2 amp restive load rating at 28 VDC. Coil current is 120 mA. K1, K2, K3 and K4 are switched simultaneously through coil pins, 71 and 72. K5 and K6 are independently switched through their coil pins.