10pcs MT8870 DTMF Receiver Telephone Dial Tone Decoder Phone Voice Control Module

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Product Name: 10pcs MT8870 DTMF Receiver Telephone Dial Tone Decoder Phone Voice Control Module Package:(Does not include UNO/MEGA2560):10 PCS MT8870 DTMF decoder module;10 PCS Male to Male audio wire (3.5mm jack ); Description: Onboard Complex Frequency Decoder IC MT8870DS Onboard 5 LED indicators for easy viewing output state DC Power Supply Voltage:5V(4.5V-5.5V) Operating Temperature : 0-+85 °C IO Drive : Current Maximum 9mA. PCB Size : 25.4×25.4MM This decoding module is for mobile and fixed telephone voice dialing decoding functionDesigned specifically for ARDUIUO Board.also use for other MCU(AVR PIC MSP430 STM32 ARM7/9/10/11 FPGA/CPLD)Does not require any wiring, can be inserted directly into the UNO/MEGA2560/DUE board to use.12 Digital outputs decode mobile and fixed telephone keys (0-9, * #).Another 4 Digital output(ABCD) can use “DTMF Dial” Software control. uno/mega2560 Code fragment:After purchase, please contact me for complete code!//*******************************************//#include int STD = A0;int Q1 = A1;int Q2 = A2;int Q3 = A3;int Q4 = A4;….//Check once every 5 msvoid dtmf_decode(void){….}void setup(){…..}void loop(){//Complete the decodingif(Decod_finished){Decod_finished = 0;Serial.print(” Activate : ” );switch(Q_dat){case 1 : Serial.print(“1 n” ); break;case 2 : Serial.print(“2 n” ); break;case 3 : Serial.print(“3 n” ); break;case 4 : Serial.print(“4 n” ); break;case 5 : Serial.print(“5 n” ); break;case 6 : Serial.print(“6 n” ); break;case 7 : Serial.print(“7 n” ); break;case 8 : Serial.print(“8 n” ); break;case 9 : Serial.print(“9 n” ); break;case 10 : Serial.print(“0 n” ); break;case 11 : Serial.print(“* n” ); break;case 12 : Serial.print(“# n” ); break;case 13 : Serial.print(“A n” ); break;case 14 : Serial.print(“B n” ); break;case 15 : Serial.print(“C n” ); break;default : Serial.print(“D n” ); break;}….. //****************************************************************************// Typical application for Mobile phones((Does not include UNO/MEGA2560): Typical application for DTMF Dial Software:

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Packaging Details

 lot (10 pieces/lot)
0.12kg (0.26lb.)
15cm x 15cm x 5cm (5.91in x 5.91in x 1.97in)

Packaging Details

 lot (10 pieces/lot)
0.12kg (0.26lb.)
15cm x 15cm x 5cm (5.91in x 5.91in x 1.97in)


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Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

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We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-20 Business days
Canada, Europe 10-20 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

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