Complies with BS2881:1989, (Security Level 1). Adjustable and removable shelving Unique 12v DC lighting/warning system which is CE marked and conforms to the low voltage directives 73/23/EEC, 89/336/EC and 96/86/EC. Nurse call system ready (volt free contact) Five pin key retaining lock. Modular design allows for easy interchange with wooden fitted storage systems, (HTM 63). Transformer casing adds 105mm to the height