What is the purpose of the plastic disk attached to the brass disk? It doesn't seem to separate and most have a break in the plastic on one edge.

This keeps the copper flat so it can pick up the vibrations of the strings. Do not try to remove it,you will mess up the peizo,the crack or chip will not hurt it. Remember,the plastic keeps the copper flat. Watch Dale Puckett on YouTube for more info. On these pickups,He is sharp on this. RM47

Will this item good to install in a acoustic guitar and connect to my amplifier.

AH! I can give you some advice here having extensive experience playing acoustic guitar during the 90s coffee house boom. Piezo pickups for acoustic guitar are usually the strip kind under the bridge and I learned to recognize and hate the sound realy well. I always went for a magnetic soundhole pickup and a preamp. HOWEVER these dirt cheap round pickups give you a chance to try it out on all different parts of the guitar body just be sure to decide on what suits you before drilling any holes. just be aware that if you plug it straight into an amplifier, it is basically a microphone and you WILL get all sorts of feedback. not the good kind. get it wrong and you will get feedback before you get loud enough to make it useful. just remember it is a microphone.

How long are the wires?

I don't have them in front of me, but they were very close to 4".

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20PCS 35mm Prewired Piezo Elements Buzzer Sounder Sensor Trigger Drum Disc

Product ID: 38707014

Details

Color
gold red
Brand
szzijia
Material
Brass Metal
Model Name
ZJtek
Item Weight
0.16 Kilograms

⚡High sensitivity with 400Ω max impedance

🎵Wide tonal response for rich sound

🛠️Durable 35mm brass base for longevity

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Description

🎶 Strike the perfect note with every tap — sound innovation in your hands!

TEMPERATURE TOUGH - Operates reliably from -20°C to +70°C, built for any environment
PREMIUM BRASS BUILD - Robust 35mm brass discs ensure durability and consistent performance
PLUG PLAY PREWIRED - Comes prewired for quick integration into your projects or instruments
WIDE FREQUENCY RANGE - Resonant frequency at 2.6 ± 0.5 KHz delivers clear, dynamic audio
VERSATILE SOUND TRIGGERS - Perfect for electronic drum kits, buzzers, and DIY contact mics

This 20-piece set of 35mm prewired piezo elements features brass bases and wide tonal response, ideal for electronic drum triggers, buzzers, and custom contact microphones. With a resonant frequency of 2.6 ± 0.5 KHz and max impedance of 400Ω, these durable, uncased discs deliver sensitive, clear sound across speech and music applications, operating reliably in diverse temperature conditions.

Specifications

Asin	B01N5HN94S
Best Sellers Rank	#62,649 in Musical Instruments (See Top 100 in Musical Instruments) #32 in Electronic Drum Triggers
Body Material	Brass
Brand Name	szzijia
Color	gold,red
Customer Reviews	4.6 4.6 out of 5 stars (99) 4.6 out of 5 stars
Included Components	20PCS 35mm Piezo Elements buzzer Sounder Sensor Trigger Drum Disc
Item Weight	0.16 kg
Manufacturer	ZIJIA
Material	Brass, Metal
Model Name	ZJtek
Model Number	ZJtek-1
Number Of Items	20
Part Number	ZJtek-1
Set Name	20PCS 35mm Piezo Elements Set
Sound Profile	Wide tonal response
Upc	606825164066

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14315CFA

Duties & taxes included

In stock

Sold byAmazon Cote D' IvoireDelivered 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 Cote D' Ivoire.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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