The Fail-Safe FSW luminaire combines maximum security construction features with energy-saving technology. This low-profile, surface-mounted luminaire uses a one-piece clamshell housing, security lensing, and tamper-resistant fasteners to maximize impact resistance and prevent contraband concealment and unauthorized fixture penetration. It is UL/cUL listed for damp locations and can be mounted to a ceiling or wall. An emergency battery pack is available as an option.