Detectors of the Signalling device react to the movement, i.e. change of a tilt angle of a fishing-rod on which form the Signalling device is fixed. After operation on the Signalling device the light-emitting diode lights up and the signal sounds. Signaling devices are ideal for catching with application of standard floats buoys, or, for example, more and more popular ground fishing with SUBFLOAT floats on the rivers with a rapid current. On the front panel it is located big readily available the button of inclusion / switching off. After installation on the form of a fishing-rod and inclusion, a signaling device will automatically define a tilt angle on which it is. Then you can adjust sensitivity, pressing of the S button. From hyper sensitive to very insensitive, in 5 steps. "S-" means "decrease in sensitivity", and "S+" means "increase in sensitivity", the Same for volume control. The V-button serves for reduction of loudness", and "V+" for increase in loudness. From very silent to very loud, also in 5 steps. The signaling device can be disconnected simple pressing of the button of inclusion / switching off. Automatic detection of a tilt angle. Adjustment of sensitivity – 5 modes. Volume control – 5 modes. Color of a light-emitting diode: Green. Batteries: two AAA 1.5V batteries (are not included in the package). Products are approved by CE therefore legislations of the EU conform to all requirements.