HHS Series Time Relays are used as the delay component in the control circuit with 50/60Hz alternating current, 380V or below 380V rated voltage or 24V direct voltage. HHS Series Time Relays are not only characterized by the high time-delay precision and wide time delay range, but also possess two display modes: Increasing progressively display mode and decreasing progressively display mode. There are six working modes such as on-delay, off-delay, cycling-delay, star-delta starting-delay, release-delay working modes and so on. HHS Series Time Relays with a complete range of products and novel appearance, are widely used in the control circuit of industrial automation.