MT8870 DTMF Voice Decoding Module

MT8870 DTMF Voice Decoding Module

The DTMF Decoder Module is an outstanding choice for projects that necessitate dual-tone multi-frequency decoding. This module is ideally suited for applications such as modem interfaces, mobile radios, and various DTMF implementations, ensuring extensive compatibility with a focus on user-friendliness.

It comes equipped with onboard LEDs, low power consumption, and an adjustable guard time, ensuring dependable performance and seamless integration with UNO/MEGA2560/DUE boards. The internal gain-setting amplifier and central office quality enhance signal reception, making it a preferred option for diverse projects. With user-friendly input interfaces, multi-channel outputs, and extensive functionality, this module is indispensable for both electronics enthusiasts and professionals.

Features:

• Integrated voice input interface

• Low power consumption

• Internal gain-setting amplifier

• Onboard LED for straightforward output state monitoring

• Customisable guard time

• Central office quality performance

• Built-in 3.5mm input interface

• 5-channel output interface

• Incorporates MT8870 frequency decoder chip

• Power-down mode available

• Inhibit mode functionality

• Integrated audio input interface

• LED indicators for output state verification, serving as a complete DTMF receiver

• Designed for direct insertion into the UNO/MEGA2560/DUE board, eliminating the need for external circuits or wiring

• 12 digital outputs for decoding mobile and fixed telephone keys (0-9, * #), plus an additional 4 digital outputs (ABCD) for software-controlled “DTMF Dial” functionality

Applications:

• Modems, mobile radios, and call routing systems

• Mobile-controlled robotics

• Home automation solutions

• Menu navigation via phone keypads

• Industrial automation applications

• Educational projects

• Prototyping tasks

Specifications

Return Policy Overview

At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.

Return Window

• Standard Returns: 7 days from delivery date for any reason, including if you simply changed your mind.
• Defective/Damaged Items: 7 days from delivery date for items received damaged or defective.
• Manufacturing Defects (Warranty): 15 days from delivery for manufacturing defects, unless a different warranty period is specified on the product page.

What Can Be Returned

Most items sold on ROBODIUM™ can be returned within the return window, including:

• Items you no longer need or changed your mind about
• Products received in damaged condition
• Items with manufacturing defects
• Wrong items received (item mismatch)
• Missing components inside the package

Return Conditions

To be eligible for a return, items must be:

• In their original, unused condition
• In the original packaging with all accessories, manuals, and free gifts (if any)
• Accompanied by proof of purchase

Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.

How to Initiate a Return

1. Contact us via email at support@robodium.com or call +91 8123109966
2. Provide your order number and reason for return
3. Submit photos/videos of the item (especially for damaged/defective products)
4. Our team will review and approve your return request within 1-2 business days

Return Pickup Process

We arrange the return pickup for you - hassle-free returns similar to major e-commerce platforms.

• Once your return is approved, we will coordinate pickup from your location.
• Pack the product securely in its original packaging.
• Include a copy of the order confirmation or packing list.
• Keep the package ready - our logistics partner will collect it at the scheduled time.

Return Shipping Costs

• Defective, damaged, or wrong items: ROBODIUM™ covers all return shipping costs. No charges to you.
• Change of mind returns: A flat return shipping fee of ₹100 will be deducted from your refund amount.

Refund Process

• Refund Method: Refunds are processed to your original payment method.
• Processing Time: 5-7 business days after we receive and inspect the returned item.
• Refund Amount: Full purchase price minus any applicable return shipping fees.
• Orders canceled before shipping receive a full refund (minus up to 5% payment gateway charges, if applicable).

Replacements

• Once the returned item is inspected and approved, we ship the replacement at no additional cost.
• Replacement items are dispatched within 2 business days of receiving your return.
• If replacement is unavailable, we provide a full refund.

Warranty Terms

All products include a minimum 15-day warranty against manufacturing defects unless otherwise specified on the product page.

Warranty does not cover: misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.

Order Cancellations

• Orders in Pending or Payment Verification status can be canceled for a full refund.
• Contact us immediately at support@robodium.com to cancel before shipping.
• Once an order is shipped, it cannot be canceled but can be returned after delivery.

Customer Service Commitment

• Email Response Time: Within 24 hours on business days
• Phone Support: Monday-Saturday, 10:00 AM - 6:00 PM IST
• Return Request Review: 1-2 business days
• Issue Resolution: Within 48 hours of verification