| Picture | Name/Model | Introduction | ||
|---|---|---|---|---|
![]() | magnet telephone Flame proof KTH1 C | magnet telephone Flameproof KTH1 C | ||
![]() | Mine and safe two-button audio telephones | Mine and safe two-button telephones, audio KTH-16 | ||
![]() | mine production scheduling phone safety coupler | mine production scheduling phone safety coupler KTA-16 | ||
![]() | Program-controlled telephone switches | program-controlled telephone switches DHT8 |





