säkerhetsanordningar
preferred label: safety devices @en
preferred label: turvalaitteet @fi
type: Concept
related: signallampor, kontrollampor

ljudsignaler
preferred label: acoustic signals @en
preferred label: äänimerkit @fi
type: Concept
related: signallampor, kontrollampor

signallampor, kontrollampor
broader generic: ljuskällor
related: säkerhetsanordningar
related: handtecken
related: ljudsignaler
type: Concept
in scheme: conceptscheme
preferred label: signal lamps, indicator lamps @en
preferred label: merkkivalot @fi
broader: ljuskällor

handtecken
preferred label: hand signalling @en
preferred label: käsimerkit @fi
type: Concept
related: signallampor, kontrollampor

ljuskällor
preferred label: valot (tekninen objekti) @fi
preferred label: lights @en
type: Concept
narrower: signallampor, kontrollampor