Còi báo động điện từ 3v - 24v ATMA6B27 12V đa màu sắc

Rated Voltage: DC 12V Package Included: 2pcs X Black Active Piezo Electronic Buzzer Module Size: 30 X 15mm/1.18 X 0.59inch(D*T) Sound Output:85dB Response Frequency:3000±500 Rated Current: 30mA Working Voltage: DC 3-24V This mini electronic beeper support DC 3-24V power supply and produce continuous high-decibel alarm sound up to 85dB. 30mm diameter and 15mm thickness with 2-wire pigtails easy to connect widely used in the car modification,DIY electronics reminder projects or other area needs sound alarm.