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KOOBOOK KOOBOOK 5Pcs MT8870 DTMF Voice Decoder Module for Arduino Telephone Audio Speech Decoding
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KOOBOOK

KOOBOOK 5Pcs MT8870 DTMF Voice Decoder Module for Arduino Telephone Audio Speech Decoding

★★★★★4.6(13 ratings on Amazon)
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₹2,338.43

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12-21 Days

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US → India delivery

Tracking provided
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Dispatch

2–4 days

Transit

8–14 days

Delivery

12–21 days

Est. delivery: Thu, 7 May – Sat, 16 May

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Typical US→India timelines. Customs or weather can add variance. We notify proactively.

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Price advantage: Better than most marketplaces.

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About this item

Key details

Brand
KOOBOOK

Applications:
Paging systems
Repeater systems/mobile radio
Credit card systems
Remote control
Personal computers
Telephone answering machine

Note:
Part of the PCB design, pin-pin VCC and GND of the silk screen to engage in anti-use, please check before use, thank you!

We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution.

Package Includes: 5Pcs

  • Onboard MT8870 complex frequency decoding chip,onboard voice input interface,onboard 5 LED indicator, easy to view the output status.
  • It is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions.
  • After receiving the DTMF signal, it splits the signal into a high frequency band and a low frequency band, and sends the signal to the digital decoder to decode the key value, and then the solved key value is in a binary manner with four lines (Q1, Q2, Q3, Q4) output to the external shared Bus.
  • When the MT8870 solves a button value and outputs it to the outside, its STD pin will rise from a low state to a high state, and then drop to a low state after a period of time. With this feature, when the signal is detected by this pin, , the value generated by the Q1-Q4 pin is immediately read into the CPU, and then the button value of the phone is solved.
  • The basic chip has been the main pin leads.PCB size: 26.5 (mm) x24.5 (mm)

Pros

  • • [PRO 1]
  • • [PRO 2]
  • • [PRO 3]

Cons

  • • [CON 1]
  • • [CON 2]

Common Questions

Is this product genuine and authentic?
Yes. All products on Poshace are 100% authentic, sourced directly from authorized US suppliers. Every order comes with a GST invoice as proof of authenticity.
How long does delivery take to India?
Estimated delivery is 12–21 business days from the date of dispatch. We ship via FedEx and DHL with end-to-end tracking provided on every order.
Are customs duties and taxes included in the price?
Yes, completely. The price you see is the price you pay — no hidden customs fees, no surprise charges at delivery.
What is the return policy?
We offer a 7-day free return policy. If you're not satisfied, return the product within 7 days of delivery for a full refund. The item must be unused and in original packaging.

What customers say

★★★★★

“Bought on PoshAce to save vs Amazon. Tracking was clear the whole way.”

— Ria, Bengaluru

Verified Buyer

★★★★★

“Saved ₹2,400 vs Amazon India on the same model. Legit product, sealed box.”

— Rohan, Chennai

Verified Buyer

★★★★★

“First time buying internationally. Customs and duties were included. No surprises.”

— Ananya, Kolkata

Verified Buyer

★★★★★

“Compared 3 sites. PoshAce was ₹1,800 cheaper. Shipped and tracked as promised.”

— Aditya, Lucknow

Verified Buyer

★★★★★

“GST invoice was ready the same day. Perfect for business expense claims.”

— Nisha, Bhopal

Verified Buyer

★★★★★

“I've ordered 4 times now. Consistent quality and pricing every single time.”

— Swati, Kochi

Verified Buyer

Quick Overview

  • ✓Onboard MT8870 complex frequency decoding chip,onboard voice input interface,onboard 5 LED indicator, easy to view the output status.
  • ✓It is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions.
  • ✓After receiving the DTMF signal, it splits the signal into a high frequency band and a low frequency band, and sends the signal to the digital decoder to decode the key value, and then the solved key value is in a binary manner with four lines (Q1, Q2, Q3, Q4) output to the external shared Bus.
  • ✓When the MT8870 solves a button value and outputs it to the outside, its STD pin will rise from a low state to a high state, and then drop to a low state after a period of time. With this feature, when the signal is detected by this pin, , the value generated by the Q1-Q4 pin is immediately read into the CPU, and then the button value of the phone is solved.
  • ✓The basic chip has been the main pin leads.PCB size: 26.5 (mm) x24.5 (mm)
Delivery timeline
Dispatch2 to 4 days
Transit8 to 14 days
Delivery12 to 21 days

Tracking is provided end to end.

  • KOOBOOK 5Pcs MT8870 DTMF Voice Decoder Decoding Module Telephone/Audio Decoder Speech Module for Arduino offers reliable performance and quality
  • Onboard MT8870 complex frequency decoding chip,onboard voice input interface,onboard 5 LED indicator, easy to view the output status
  • It is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions