The ZÖLLNER MAKROFON M75F is a diaphragm sound transmitter operating on compressed air. The signal is released by an electromagnet or manually using a hand pull-rope. To avoid the costly laying of a pull-rope, a second electromagnet for emergency voltage can be provided. A thermostat controlled anticondensation heating keeps the sound horn and the operating valve free from condensed water and thus from ice.
type: MAKROFON M75F/260 ZVE/E)H
ship's length: 20 -< 200 m
frequency: 260 Hz
sound pressure level at 1 m: 138 dB
air pressure: 6-40 bar
air consumption free, dry air: 8-12 l/sec
protection type: IP 56
system voltage: 230 V AC or 115 V AC or 24 V DC