【Model number：20L-CD】

This device is a beacon. In collection of various underwater observation equipment, it assists the confirmation of the position by sending an electric wave signal and , so it is a thing of facilitating discovery.
The characteristic of this beacon is available in depth to 12,000m because of superior to light weight and prevention of rust characteristics and also withstand pressure container made by titanium.
In addition, it is possible to dispatch signal for a long term more than up to 150 hours.
In a state of observation at the bottom of the sea , it is possible to stop movement by a pressure switch or a clinometer.