This Water Over Flow Tank Alarm come with Voice Sound Overflow - Water Alarms is An Ideal Equipment That Is Used To Control The Wastage Of water - Easy Installations – Alarm With A Sweet Voice That Alerts You Even If You Are Not Near To The Alarm' - Indication And "Attn. Water Tank Is Full Or Panni Ki Tanki Bhar Gayi Hai " Indication Through Voice Alarm Output. - Never Gives Electric Shock Due To Dc Uses :- This Water Level Indicator Can Be Used In Houses, Apartments, Clinics, Hotels, Lodges, Restaurants, Educational Institutions, Hospitals, Factories Hostels Etc.