Còi báo động chống thấm nước DC 12V tại Lotte Market

Giới thiệu Còi báo động chống thấm nước DC 12V tại Lotte Market

Description:
The piezoelectric buzzer is mainly composed of a multivibrator, a piezoelectric buzzer, an impedance matching device, a resonance box, an outer casing and the like. Some piezoelectric buzzer housings are also equipped with light-emitting diodes. A multivibrator is composed of a transistor or an integrated circuit.
When the power is turned on (1.5~15V DC working voltage), the multivibrator starts to oscillate and outputs an audio signal of 1.5~2.5kHZ
Piezoelectric buzzers can be divided into: passive piezoelectric buzzer (external drive series), active piezoelectric buzzer (including drive series), and self-excited piezoelectric buzzer.
The characteristics of the piezoelectric buzzer are: small size, light weight, thin thickness, low power consumption, good reliability, and low cost.
It is suitable for sounding devices on small electronic products such as electronic watches, pocket calculators, electronic doorbells and electronic toys. Electronic clocks, electrical products, burglar alarms, downhole alarms, smoke alarms and the use of electronic toys. It can also be used as an acoustic sensor for voice-activated toys.
Specification:
Material: plastic
Product detailed size: 43x33mm/1.69x1.30 inch
Voltage range: 6.0 ~ 28.0VDC
Current consumption (maximum): max.20mA
Output sound pressure (minimum): min.90dB
Output frequency : 2,900 ± 500 Hz
Operating temperature : -20°C to +60°C
Storage temperature : -30 ° C to +70 ° C
Test Condition : 12VDC /10cm
Package Includes:
1 Piece 4333 Piezo Active Waterproof Buzzer