Will this unit #b604 work on a 5v dc input and still be loud ? and when connecting to 5v dc which is negative and positive anode or cathode ?

It work at 5V DC, and it's very loud. Red wire is positive(first pole at jack)

I need to buy a power pack to run this how many amps will this siren draw from the power pack?

yes. The working current is 100mA at 5VDC power bank, it's 50mA at 3VDC.

What is the current range this can handle? I don't see it listed. This laptop 110v->12v power cable is rated 8 amps.. I'm sure that's too high.

I dont know what do you mean with range . I'm a B103 User , so I dont have this power cable , I have just the wires connected to a WiFi plug and in case of movement (detected by a sensor in a defined room and when nobody is at home) siren is activated automatically . (just an idea about possible use)

Where do you connect the 3.5mm? If i uave a 3prong smart plug, how do i connect this?

You should add a power adapter(12V DC) or 5VDC(phone charger), and because the siren work at 2 to 12VDC. The power from plug is 110VAC.

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2V 3V 5V 6V 9V 12V DC Piezo Electronic Buzzer Very Load Alarm Electric Security Siren Horn 120dB@12VDC

2V 3V 5V 6V 9V 12V DC Piezo Electronic Buzzer Very Load Alarm Electric Security Siren Horn 120dB@12VDC

Product ID: 63394879

Details

Brand
Tokatuker
Color
Black
Power Source
Corded
Product Dimensions
2.13"L x x
Voltage
12 volts

🔊120dB piercing alarm

🔌Wide 2-12V DC compatibility

🛠️Flexible mounting: sticker or screws

€ 12.83

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Description

🚨 Make your security impossible to ignore!

COMPACT DURABLE - Sleek 54mm diameter design built to last in any environment.
UNMATCHED LOUDNESS - 120dB sound level cuts through any noise, ensuring instant attention.
VOLTAGE VERSATILITY - Operates seamlessly from 2V up to 12V DC—power your security your way.
EFFORTLESS INSTALLATION - Mount with included sticker or screws for quick, hassle-free setup.
PLUG PLAY CONVENIENCE - 3.5mm plug connector with clear polarity for foolproof connection.

This 120dB DC Piezo Electronic Buzzer delivers powerful, piercing alarm sounds across a wide voltage range (2V-12V), making it ideal for versatile security applications. Featuring easy installation options with sticker or screw mounts and a user-friendly 3.5mm plug connector, it’s a compact yet robust siren designed to deter intruders and alert your surroundings effectively.

Specifications

ASIN	B079L2KBG7
Audible Noise	120 db
Best Sellers Rank	#60,352 in Electronics ( See Top 100 in Electronics ) #232 in Security Horns & Sirens
Brand	Tokatuker
Color	Black
Control Method	Touch
Customer Reviews	4.4 4.4 out of 5 stars (209)
Item Dimensions L x W x H	2.13"L x 2.13"W x 1.89"H
Manufacturer	Bestgo
Mfr Part Number	BT-604-2
Model Number	BT-604-2
Mounting Type	Sticker
Number of Items	1
Power Source	Corded Electric
Size	B604
Unit Count	1 Count
Voltage	12 volts

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TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

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€ 12.83

Duties & taxes included

In stock

Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Ireland.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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Very impressed with the quality and fast delivery. Will shop here again.

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