Observation Elevators 1.AC variable frequency door machine 2.Capacity:630-1000kg 3.Advanced VVVF drive 4.Steady running Observation Elevators :Control system : Monarch ... 380V, 3PHASE ,AC220V ,50HZ. power:11kw.Monarch : Multiple redundant cpu control, integrated advanced Cabus,MODBUS,GSM communication technology ,special weighing compensation ...