These type of elevators occopy much less space 1x1m. to be installed & provide 4 stops servicibility & 10m. are the key features in these elevtors.
by which single phase power using hydraulic drive system to run.
Using minimum possible space , the possibility of using single phase house power.
the least noise & vibration in the utilisation time & 40% lower power consumption rather than other traction systems.
(trivial depreciation of the drive force system due to the unilateral drive system)