General description The AC 220V 100mm 4 inch Dia Schools Fire Alarm Round Shape Electric Bell is a reliable and effective alert system designed for various environments including residential buildings, offices, factories, schools, shops, hotels, and public places. It features a striking red color and is constructed from durable metal and plastic materials. Technical specifications Rated Voltage: AC 220V Top Diameter: 100mm / 4 inch Base Diameter: 115mm / 4.5 inch Overall Height: 5cm / 2 inch Weight: 378g Other information Package Content: 1 x Fire alarm bell Note: Light and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3cm.