Hydraulic Elevators are some of the safest in the industry. The systems have several features built-in for fail-safe operation. One of the best features of hydraulic systems is the elevators are engineered and designed specifically for each individual installation. Because of this, they will only travel to the maximum total floor-to-floor distance plus 2″-3″ of runby or overtravel (extra buffer space), meaning they can never move more than a few inches past the top landing. The elevators will also include a flow control switch to prevent overspeed in the down direction and a pump-run timer to monitor the travel time between landings. The rated speed for an in-home hydraulic elevator is 40 fpm, traveling 20 feet will take approximately 30 seconds. The cabs are supported with two 3/8" diameter steel cables rated for thousands of pounds. The cables are connected to an instantaneous braking system that is also continuously monitored by a PLC-based controller.