bells, ship boiler controls, automatic diving bell furniture (internal) searchlights and signalling equipment sirens, horns and whistles  

4676 6+S SRD 414/2 ZETFON 400/310 1+ 10+SBG 300M 350EL 500EL 500M TS1a ZETFON 300/310 ZETFON 50/650K ZETFON control box AC ZP-4 ZETFON control box DC ZP-5 Zet-Horn 110 AC Zet-Horn 131 AC Zet-Horn 141 AC Zet-Horn 70 AC Zet-Horn 90 AC