Rugged buzzer JA222 series

Electronic buzzer with dynamic speaker for automatic train protection systems The electronic buzzer is a warning device designed for use in rail vehicles. The rugged device has a dynamic speaker. There are four settings for volume and three settings for sound frequency. Features - Signalling for intermittent automatic train-running control and dead-man equipment - Wide range of operating voltages: 16.8 … 150 V DC - 4 sound levels selectable - 3 sound frequencies selectable