Edwards 600 Series Low voltage pushbutton is made of solid brass for durability. It has voltage rating of up to 48 VAC. Round button has large accessible terminals and can be surface mounted. Conventional button is designed for long service and can be used at home, apartment or office. It measures 1.750 Inch diameter x 0.687 Inch. Also known as -Edwards PSH BTTN STMPD SRFCE 1 3/ 4 DIA - ED-603-Edwards 603 Low Voltage Door Bell Pushbutton Momentary 48 Volt AC Surface Moun