A panel mounted, screw terminal, open style sequencing relay. This two pole relay has a single coil which operates a ratchet wheel. Control cams, on the ratchet wheel shaft, step from one position to the next on each impulse to the coil. A 50 millisecond pluse will step the relay. Coils are for momentary duty only. The 85 series may be supplied in any sequence up to 12 steps. Contacts are single throw.