Greet your guests the Islamic way! Fit the buzzer to your front door with the supplied sticky pad and place the ringer anywhere within the house. The next time someone rings the bell, you will be alerted with the Muslim greeting of “Asalaamu Alaikum, Peace be upon you”. Dual mode allows you to select a child’s voice or an adult voice. Tool free installation, ready in seconds. 3 x AA batteries and 1 x AAA battery required. Not supplied.