17 brilliant sounds including Westminster, pop, and a special call sequence for the hearing impaired. The sounds can be changed from melody to alarm, making it ideally suited for use with motion detectors; for example, a melody can be triggered in a store during the day and the alarm sound at night. The volume is adjustable up to a maximum of 86 dB(A). It features 2-way call differentiation for optimum access control and a silence function with one-button mute and LED control. The user-friendly easyTIP operating unit allows for easy operation of all functions with a fold-out design element.