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B20 Piezoelectric Buzzer – High-Tone Active Alarm Buzzer (5V–12V) for Arduino, Raspberry Pi, Security Systems & DIY Electronics | India
B20 Piezoelectric Buzzer – High-Tone Active Alarm Buzzer (5V–12V) for Arduino, Raspberry Pi, Security Systems & DIY Electronics | India
SKU:ER015
Low stock: 9 left
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Note: In case you receive a damaged or faulty product, please return it in the original box with all foam and packaging. Returns will not be accepted if further damage occurs due to improper packing.
If you order a product that is currently in Preorder, and the price of that item increases in the future, you will be required to pay the difference in price.
For refund/return/replacement, call us at +91 95995 94520 or email us at support@rees52.com
Delivery Time
Delivery Time
- Delivery time with the Express Shipping option is 2-3 working days, and with the Standard Shipping option is 5-6 working days. It varies based on location, reliant on courier services.
- Delivery time if the order item is on Preorder Status is 15-20 working days.
COD (Cash on Delivery)
COD (Cash on Delivery)
- For COD you have to pay extra charges of Rs 350/- before the shipment. (We will share the company QR Code, UPI ID or Account details for the same)
The REES52 Promise
The REES52 Promise
We want you to build, not worry. Here is exactly what happens if something goes wrong with your order.
Dead on arrival or defective? We replace it.
If your item is dead on arrival or has a manufacturing defect, tell us within 7 days of delivery. Email support@rees52.com with your order number and a short video or a couple of photos showing the problem. Our team will get back to you within 24 hours and arrange a free pickup from your doorstep - you never pay return shipping for a defective item. Once we verify the issue, your replacement ships out right away. If the item is out of stock, you get a full refund instead.
Refunds, with real timelines.
- Approved refunds go back to your original payment method within 6-7 working days.
- Missing item in your package? Tell us within 7 days with photos of what arrived and the parcel label. Once confirmed, the refund for the missing item reaches you in 2-3 working days - or we ship the missing piece free, your choice.
- Every refund comes with a reference number by email or WhatsApp, so you can track it with your bank instead of chasing us.
Wrong item or not as described?
Email us your order number and a photo of what you received. We arrange the return pickup, and ship the correct item as soon as the return is on its way. Prefer your money back instead? That is fine too - full refund, same 6-7 working day timeline.
About lead times on some products.
A few items on rees52.com are sourced from our overseas partner warehouses and are not sitting on our shelf. Those products show a lead time of about 20-25 working days on the product page, before you pay. If you order one, we keep you posted as it moves. Changed your mind while waiting? You can cancel any time before dispatch and get a full refund within 6-7 working days. No cancellation fee, no questions.
Talk to a human.
Email support@rees52.com or call/WhatsApp +91 95995 94520, Monday to Saturday, 10:30 AM to 7:00 PM. Real people, order number in hand, actual answers.
Description:
The B20 Piezoelectric Buzzer is a high-tone active sound alarm designed for embedded electronics, security systems, Arduino projects, automation, and industrial alert circuits.
It operates on 5V–12V DC, making it compatible with Arduino, Raspberry Pi, ESP32, PIC, STM32, and a wide range of microcontroller and IoT applications across Delhi NCR, Mumbai, Bangalore, Hyderabad, Pune, and all of India.
This active buzzer has a built-in oscillation circuit — just connect power and it automatically produces a loud, clear tone. No programming or signal generation needed.
Ideal for alarms, warning systems, notification circuits, robots, smart devices, and automation feedback.
Specifications:
| Model | B20 Piezoelectric Buzzer |
| Type | Active Piezo Alarm Buzzer |
| Operating Voltage | 5V–12V DC |
| Rated Voltage | 9V DC |
| Operating Current | 15–25mA (typical) |
| Sound Output | ~85–100 dB @ 10 cm |
| Frequency | ~2.7–4.0 kHz |
| Terminals | 2 (Positive & Negative) |
| Polarity | Marked on buzzer casing |
| Diameter | 20mm (approx.) |
| Height | 9mm (approx.) |
| Housing Material | ABS Plastic |
| Mount Type | PCB / Panel mount |
| Weight | 4g (approx.) |
| Buzzer Type | Active (self-oscillating) |
| Life Expectancy | >5000 hours |
Features & Use Case:
- 🔊 High-Pitched Piezoelectric Tone
Produces a loud, sharp, consistent sound perfect for alarms, alerts, and notifications. - ⚡ Wide Voltage Range (5V–12V)
Compatible with battery-powered devices as well as microcontroller logic systems. - 🔌 Active Buzzer – No Coding Needed
Built-in oscillator: tone is generated automatically when DC power is applied. - 🎯 2-Terminal Easy Interface
Simple polarity-based connection: +V and GND. No driver IC required. - 🧩 Compact Modular Design
Perfect for PCBs, breadboards, robotics frames, and compact enclosures. - 🛡️ Reliable & Long-Life Operation
High-quality piezo element ensures stable sound output for long periods. - 👨🎓 Ideal for Students, Makers & Professionals
Compatible with real-world applications and popular microcontroller platforms.
Package Included :
- 1 x B20 Buzzer
Get a loud, reliable, and ready-to-use alarm buzzer for your Arduino, robotics, and DIY electronics. Perfect for security systems, automation alerts, and projects.