6VDC Mechanical Buzzer Features: Operating voltage range: 4-8VDC Rated voltage: 6VDC Max. rated current: 25mA Min. sound output: 75 dB Frequency: 400Hz Operating temperature: 14F to 140F (-10C to 60C) Single tone Lead wire connection Size: 1.32"L x 0.67"W x 0.61"D