Usages of katkaisin
Älä koske katkaisimeen likaisilla käsillä!
Do not touch the light switch with dirty hands!
Poistuessani huoneesta sammutan tuulettimen katkaisimesta.
When leaving the room, I turn off the fan from the switch.
Ilmaisin sijaitsee katkaisimen vieressä.
The detector is located next to the light switch.
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