Doorbell speaker:
Doorbell speaker is a kind of micro speaker unit which uses a diaphragm made of Mylar material. Doorbell speakers are of ultrathin design and lightweight and clear voice. It is widely used in building security industry (e.g. intercom, video door phone, intelligent door control..)
There are two types of Mylar speakers from the shapes:
1) Round shapes, we have products from 10mm to 57mm in diameter.
2) Oblong shape, we have products in sizes of 1510/1712/1813-..
FAQ
Q1. What is the MOQ? Doorbell Speaker,Doorphone Speaker,Video Doorphone Speaker,Doorbell Wireless Speakers Shenzhen Xuanda Electronics Co., Ltd. , https://www.xdecspeaker.com
According to ZTE Corporation, an FTTx equipment manufacturer, CDE, the power division of Clarksville, Tennessee, USA, will deploy Zhone's zNID optical network terminal ONT products to provide 1Gbps Internet services.
CDE has been offering active FTTH services since 2007. The total length of its fiber optic network exceeds 1,000 profit, covering the entire range of Clarksville City. CDE serves approximately 64,000 local power users and 15,000 broadband subscribers. The new ONT will be able to support the Giga home service y8iji automatic power meter reading service.
CDE stated that Zhone's extensive experience and advanced equipment helped them achieve triple play. Through the successful deployment of Gigabit services, CDE further improved service performance. 
XDEC: 2000pcs for one model.
Q2. What is the delivery lead time?
XDEC: 15 days for normal orders, 10 days for urgent orders.
Q3. What are the payment methods?
XDEC: T/T, PayPal, Western Union, Money Gram.
Q4. Can you offer samples for testing?
XDEC: Yes, we offer free samples.
Q5. How soon can you send samples?
XDEC: We can send samples in 3-5 days.