The HMS Lowering Device System (LDV Series) is designed for lighting in large areas such as roadways, port facilities, airports, water treatment plants, parking lots, rail yards and storage areas. Choice of Luminaires: HMLED4 or Predator® LED luminaires may be clustered on the lowering device mounting ring in various combinations to provide customized lighting solutions. Holophane provides many options in choosing a lowering device system. Top latching systems provide a high level of safety for personnel, equipment and public areas. Top latching also provides long life to the system by removing all weight from the raising and lowering components. Bottom latching systems are also available. Additional system choices include self centering luminaire ring or non-centering ring, winch mounted in the pole and portable drive motor or motor mounted in the pole. Optional accessories include lighting protection, obstruction lighting and multiple circuit wiring. Holophane has provided lowering device systems for more than 30 years with over 40,000 systems installed worldwide. Holophane provides a single source for the complete high mast system including the lowering device, luminaires and pole, assuring component compatibility. Factory trained, field experienced technicians are available for installation assistance.