Another of their revolutionary devices (Emergency Rescue Device/ERD) eliminates the possibility of becoming trapped in an elevator and experiencing claustrophobia. This is only possible because of Su-vastika's most recent innovation, ERD, a world-class power storage solution that solves the lift's power failure issue. Existing ARD (Automatic Rescue Device) technology only begins when the elevator stops, operates 30 to 60 seconds later, and can only transport you to the next floor and open the door. The Emergency Rescue Equipment (ERD), an electronic and electrical device, supplies 3-phase power to the elevators if the input power source or mains power fails.