PF-21A31PQ Allicdata Electronics
Allicdata Part #:

458-1250-ND

Manufacturer Part#:

PF-21A31PQ

Price: $ 5.40
Product Category:

Audio Products

Manufacturer: Mallory Sonalert Products Inc.
Short Description: AUDIO PIEZO INDICATOR 3-24V TH
More Detail: Buzzers Indicator, Internally Driven Piezo 12V 18m...
DataSheet: PF-21A31PQ datasheetPF-21A31PQ Datasheet/PDF
Quantity: 43
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
1 +: $ 4.91400
10 +: $ 3.91230
25 +: $ 3.56983
50 +: $ 3.32527
100 +: $ 3.10521
250 +: $ 3.05628
Stock 43Can Ship Immediately
$ 5.4
Specifications
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: 3kHz
Technology: Piezo
Operating Mode: Pulse, Fast
Duration: --
Sound Pressure Level (SPL): 85dB @ 12V, 30cm
Current - Supply: 18mA
Port Location: Top
Operating Temperature: -20°C ~ 70°C
Approvals: --
Ratings: --
Mounting Type: Through Hole
Termination: PC Pins
Size / Dimension: 0.945" Dia (24.00mm)
Height - Seated (Max): 0.559" (14.20mm)
Description

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Alarms, buzzers, and sirens are all used to alert people when an emergency situation arises. The PF-21A31PQ is an electronic warning device that belongs in this category. This article will discuss the application field and working principle of the PF-21A31PQ.

The PF-21A31PQ is a versatile alarm device that is commonly used in commercial and industrial settings. It has been designed to produce a loud, distinctive sound in order to alert people to an emergency situation. The device is highly visible thanks to its bright red body, and its sound pressure level of up to 125 decibels ensures that the alarm can be easily heard from a distance. The device can also be customized to work with other features, such as flashing lights and a digital display for a more effective alert.

The working principle of the PF-21A31PQ is relatively simple. A sounder element is installed into the device, which produces an audible signal when activated. The signal is generated by a high-voltage impulse that passes through a coil, creating an electromagnetic field. This field induces an electrical current in the sounder element, causing it to vibrate rapidly and produce the sound. The sound can then be amplified if necessary using a horn speaker. The device is powered by a low-voltage DC power source and is usually connected to the alarm network of the facility where it is installed.

The PF-21A31PQ has several other applications beyond emergency alarm functions. It can be used as a general alert system for fire detection, intruder alerts, chemical alarms, and other situations which require a rapid response. Its loud and distinctive sound makes it ideal for broadcasting messages in large facilities, such as airports, train stations, and industrial complexes. The device can also be used as a signaling device for various situations, such as opening and closing of doors, traffic signals, and other events.

In conclusion, the PF-21A31PQ is a versatile alarm device that is commonly used in commercial and industrial settings to alert people to an emergency situation. Its working principle involves a sounder element that is activated by an electrical impulse, which is then amplified using a horn speaker. The device has several other applications, including fire detection, intruder alerts, and general messaging. This makes it a valuable tool for facilities that require a rapid response in the case of an emergency.

The specific data is subject to PDF, and the above content is for reference

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