... vessels.FEATURES1.Order steps: full, half, slow, dead slow, standby, stop, few, dead slow, slow, half, full.2. ... and output the close contact.3.Power failure alarm: when the main power supply 220VAC is failure, it will change ... alarm and output the close contact. When the main power is recovered, the alarm will be stop.4.Dimmer ... voltage:AC220V±10% 0.2A DC24V 1A Power distribution box power supply box