First line: 11/12/2007 PART NUMBER: CPE-522Abstract: .. PART NUMBER: CPE-522. SPECIFICATONS operating frequency 3.2 ± 0.5 KHz. operating voltage range 3 ~ 20 V DC. current consumption 10 mA max. at 12 V DC. sound pressure level 75 db min. at 30 cm/12 V DC. rated .. Tags: CPE-522