BTS3012 External Alarms VPRS-400 Side 1.Maint Fail: Red-Grey 2.Rect Fail: Black - Blue 3.Under Voltage: Yellow - Light Blue 4.Over Voltage: Pink-Brown BTS3012 Side (SWIN Port) White-Blue White-Orange White-Green White-Brown From Sensors 1.Temperature: Red Black - Red 2.Humidity: Yellow Black -Yellow 3.Door: Black White - Black 4.Smog:Black White - Black 5.Water: Green-White-Red BTS3012 Side (AIN Port) Red-Brown Red-Grey Black - Blue Black-Orange Black-Grey-Yellow