Fabric security label

Facilities management system with server-independent enclosures

Facility and method for crowd screening and protection

Facility and method for tracking physical assets

Facility for monitoring the operation of a signal lamp

Fail safe circuit for a salinity monitor

Fail safe fluid level detection circuit

Fail-safe acknowledging circuit

Fail-safe acknowledging circuit

Fail-safe alarm circuit

Fail-safe alarm system utilizing frequency modulated signal dete

Fail-safe condition sensing circuit

Fail-safe high temperature alarm

Fail-safe instrument system

Fail-safe instrument system

Fail-safe leak detection and flood prevention apparatus

Fail-safe leak detector

Fail-safe leak detector including independent and repetetive sen

Fail-safe operation of a vehicle automatic transmission responsi

Fail-safe scan circuit and a multibeam sensor