PF-27A35WQ

Series:	PF
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Driver Circuitry:	Indicator, Internally Driven
Input Type:	DC
Voltage - Rated:	12V
Voltage Range:	3 ~ 24V
Frequency:	3.5kHz
Technology:	Piezo
Operating Mode:	Pulse, Fast
Duration:	3 PPS
Sound Pressure Level (SPL):	95dB @ 12V, 30cm
Current - Supply:	15mA
Port Location:	Top
Operating Temperature:	-20°C ~ 70°C
Approvals:	--
Ratings:	--
Mounting Type:	Panel Mount, Flange
Termination:	Wire Leads
Size / Dimension:	1.181" Dia (30.00mm)
Height - Seated (Max):	0.638" (16.20mm)

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Alarms, Buzzers, and Sirens: PF-27A35WQ Application Field and Working Principle

Alarms, buzzers, and sirens are electronic sound-emitting devices used to alert people in case of emergency. The PF-27A35WQ is a type of alarm, buzzer, or siren designed to generate an audible alarm in enclosed areas. This type of device is typically used in residential, commercial, and industrial settings. The PF-27A35WQ is powered by an external 12-volt DC power supply. It features an audio output of 108 dB (at 1 meter) and can operate up to 100,000 hours. It is designed to be used outdoors with a weatherproof housing and is available in a variety of colors. The device comes with two different mount options, which are the wall mount and the ceiling mount.The working principle of the PF-27A35WQ is fairly simple. When the power supply is connected and 12V DC is applied, a diaphragm is pushed and pulled by a coil attached to the diaphragm. The motion of the diaphragm is what produces the sound that we hear. The frequency of the sound is determined by the frequency of the electrical signal that is being applied to the coil. The PF-27A35WQ can be connected to an external sound source, such as a remote alarm system or a fire alarm system. When the sound source is triggered, the signal is sent to the PF-27A35WQ and the diaphragm is pushed and pulled in time with the signal, producing the audible alarm.The PF-27A35WQ is a great solution for alerting people in an enclosed area of an emergency. Its weatherproof housing and long life make it a reliable and cost-effective solution for residential, commercial, and industrial settings. In addition, its versatility makes it a great choice for a variety of applications.

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