Ay0! Electromagnetic buzzer 5V SOT plastic tube using active buzzer

STOCK per 3 okt = 500 PCS Buzzer 5V (SOT plastic package) active buzzer sound long Attributes Title 5V active Buzzer Unit MM Literacy: There are a lot of people on the concept of active and passive buzzer buzzer not very clear, here to do a brief introduction, I want to be helpful for future use. Note that the #34;source #34; does not mean power. But to shock source. Passive buzzer is characterized by: Parasitic internal source without shock, so if you can not make it with the DC signal tweet. You must use the square wave 2K ~ 5K to drive it 2 controllable-frequency sound can be made #34;more than a meter made Suola Xi #34; effect. 3 In some special cases, you can reuse LED and a control port active buzzer