42mm Piezo蜂鸣器和电路在建造的

Piezo Buzzer With Circuit Built in (Piezoelectric sound generator)(Diameter 42mm by Height 16mm, 12VDC, 3.1kHz)1,Have room to negociate;2, No minimum order requirement;3, Make formula by ourselves;4, Each procedure under control.Piezo Buzer Application: (transducer, self drive with internal oscillator circuit)-Telephone ringer;-Copier, printer;-OA equipment;-White goods;-Fan heater, toys, alarm.Main feature of Piezo buzzer:-Emit a clear penetrating sound generator; -Can be driven directly Ics; -Low frequency and multi-frequency capability.Main attributive characters for Piezo Buzzer, as followsMaterial: Piezoceramics; ABS/PPO/AlConfiguration: with mounting ears, or notConnection terminal: Pin, Wire, or SMDProduct types: External drive, Self drive & Internal oscillator circuitDongguan Sweet Sound Electronics Company Limited (SWT), a Hong Kong independently owned company was established in 1991 . Sweet Sound is a professional enterprise to research , produce and sell various piezoelectric elements , piezoelectric sounders , piezoelectric ultrasonic transducers and piezoelectric horns , electro-magnetic buzzers, piezoelectric buzzers, and speakers. The monthly output is 20 million pieces . Nowadays , it has about 500 employees , 6000M2 of manufacturing plant , and 200 sets of production and test facilities and instruments involving large scale automatic tunneling furnace.Sweet Sound has passed the ISO 9001:2008 and ISO14001:2004 and RoHS & REACH. There are 40 senior engineers working in our plant, have gained leading technical competence in design and production of piezoelectric material and acoustic components. Our products have been widely applied for various kinds of alarms, satellite receivers , microwave ovens, computers, calculators, digital cameras, electronic dictionaries, ultrasonic planimeters, medical devices, micro-displacement positioner, high voltage generator, facsimile machines, telephones, electronic toys and clocks, etc. Our products and service have won a very good reputation for the past 19 years.Contact person: Kevin Wang, Marketing Manager Tel.No.:+86-0769-22620160; Website 1:www.sweetsound.cn; website2: sweetsound.en.alibaba.com. Our main customers are as follows: