The “Pushbutton” type telegraph has a row of up to 12 interlocked pushbuttons, mounted in an black anodized aluminium panel size 96x288mm. Each telegraph has a lamptest pushbutton, all lamps can be replaced from the top by removing an individual lamp cap. The bridge telegraph has a dimmer to control the lamp brightness. The audible alarm is generated by an internal buzzer. For those areas where a higher sound level is required, horns and gongs can be supplied.

The telegraph systems can be supplied with potential free contacts for data logging (order recorder) for each command as well as for telegraph alarm, power failure and station on service (if more then one receiver/transmitter is used). Orders are transmitted and replied by pressing the push-button engraved with the required order. If pressed, it remains locked in that position and automatically releases the push-button of the previous order. When an order is transmitted from the wheelhouse telegraph, the signal lamps inside the corresponding pushbuttons at all locations are flashing and the audible alarms are activated, giving an intermittent signal.