Note that the term ‘source’ here does not refer to a power supply, but rather to an oscillation source.
1. Module employs a 9012 triode driver
2. Operating voltage: 3.3V–5V
3. Features mounting bolt holes for easy installation
4. Sub-board PCB dimensions: 3.3cm × 1.3cm
Characteristics of passive buzzers:
1. They lack an internal oscillator, so cannot be activated by DC signals.
Drive them with a square wave between 2kHz and 5kHz for audible output.
2. Sound frequency is controllable, enabling the production of musical notes (‘do re mi fa sol la ti’).
3. In certain applications, they can share a control port with LEDs.
Active buzzers feature:
1. An internal oscillator, enabling operation upon powering up
2. Convenient programme control, requiring only a single logic level from a microcontroller to generate sound – a capability absent in passive buzzers.
Each unit weighs approximately 6g.
hipping matters：
China Post Small Parcel： 15-20 days
EMS：10-15 days
FedEx：5-7 days
DHL Express：5-7 days
UPS：4-7 day
Receive order preparation time:
Ships 1-3 days after receipt of order
Tax issues:
1. As each country charges different taxes on parcels, you need to know whether the country of your own address needs to charge taxes before placing an order.
2. If you need to reduce the invoice amount, you can contact customer service or e-mail contact.
3.The package arrives safely in the buyer’s country and the merchant is not responsible if the package is (returned) because the buyer has not paid the tax.
Other issues:
If you need to find other electronic products or have any questions you can contact customer service or email. (We will get back to you as soon as possible)
