A modern re-worked version of the old school classic Mini Micron Bite Alarm boasting a number of great new features including receiver technology Volume control button with seven levels Tone control button with four settings Sensitivity control button with four different settings Drop back differential Compatible with Mini Micron X Receiver Two 5mm High Vis Multi coloured LEDs, Green, Blue, Red and Orange Colour selected by holding down volume button and pressing sensitivity button to change Adjustable LED brightness LEDs adjusted by holding down volume button and pressing tone button D-Tec Sensing System/Roller wheel technology for clear, consistent bite detection Power out socket 2.5mm for use with illuminated bite indicators such as the Fox Illuminated