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DC 12V 4CH DTMF Relay MT8870 Phone Voice Decoder Remote Controller Switch Module

DC 12V 4CH DTMF Relay MT8870 Phone Voice Decoder Remote Controller Switch Module

  • Model: CE023
  • Shipping Weight: 0.13Kg
  • 9974 Units in Stock

USD $14.99

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Below item is powered by Canton-electronics Ltd . 
Typical applications:
Home lighting system
Remote control switch
Smart Home / Home Automation
DC 12V LED lighting
Fluorescent lamp
12V DC Motor
Fluorescent lamp
Automotive electronics
Industrial automation and control
Control 4 Channel DC 12V electrical equipment: LED / Automotive electronics
DC 12V motor reversing control:RS360
General electrical equipment control:DC 1-48V or AC 85-265V
All kinds of motor reversing control: DC 1-48V or AC 85-265V
Product Name: DC 12V 4CH DTMF Relay MT8870 Phone Voice Decoder Remote Controller Switch Module
Module No.:  CE023
Package:(Does not include Mobile phones):
1 PCS DC 12V 4 Channel DTMF Relay Board ;
1 PCS Male to Male audio wire (3.5mm jack );

Product Specifications:


Operating Voltage: DC 9-13V(Recommendation : 12V);

Operating Temperature : -40-+85 °C

Size: 76x73x20mm

Weight :72g

Relay maximum load capacity: DC 0-48V/6A; AC 85-250V/5A

Information Download address, click here 

Product Features:


4 channel relay.DTMF audio decoder control,Dial the number 1/2/3/4 control channel 1/2/3/4.

Power anti-reverse diode.

8 kinds of Mode selection: Momentary, Toggle, Latch,Delay 5/20/60/120/250 seconds

Flexible wiringcan be controlled all kinds of electrical equipment:

DC 12V LED Motor Forward and reverse,DC 1-48V /AC 85-265V LED Motor Electric light Refrigerator Air conditioning etc.


Use Method: 


This decoding module is for mobile and fixed telephone voice dialing decoding function , has 4 channels, 8 kinds of selectable output function,4 channels outputs decode mobile and fixed telephone keys (number1/2/3/4).or can be use "DTMF Dial" Software control.

Control by mobile phone: 

CE023_12 CE023_8


Control by DTMF Dial Software:


Mode selection:


NC : Normal Connect

COM : Common terminal

NO: Normal open

Relay close: COM connect NO.

Relay open : COM disconnect NO.



Mode selection explanation:


Momentary------------ Dial number 1, the relay 1(Out 1)is close, one second delay relay 1 open, the same as Relay 2/3/4 ,Every Relay is Independent ;


Toggle--------------- Dial number 1, the relay 1(Out 1) is close, Dial the number 1 again relay 1 open, the same as Relay 2/3/4 ,Every Relay is Independent;



Dial number 1, the relay 1(Out 1) is close, relay 2/3/4(OUT 2/3/4) is open

Dial number 2, the relay 2(Out 2) is close, relay 1/3/4(OUT 1/3/4) is open

Dial number 3, the relay 3(Out 3) is close, relay 1/2/4(OUT 1/2/4) is open

Dial number 4, the relay 4(Out 4) is close, relay 1/2/3(OUT 1/2/3) is open


Delay 5/20/60/120/250 seconds ------------------ Dial number 1, the relay 1(Out 1)is close, 5/20/60/120/250 seconds delay relay 1 open, the same as Relay 2/3/4 ,Every Relay is Independent.

Introduction for Shenzhen Canton-electronics Trading Co.,Ltd :
We specialize in RF Wireless Radio Transmitting Units and Receiving Units, the product include transmitters with case, receivers with relay(s), transmittng modules and receiving modules, are widely applied in RC toy, remote sensing, telemetry, fireworks, industrial control, home&garden application.
Normally shipping is by Airmail from China Post Air Mail or Hong Kong Post Air Mail ,15-60 days shipping time based on different country .
Express is available, shipping time is 2-7 days all over the world, and telephone number is needed. Please contact us first for extra payment .
The Best Prices. By working with Canton-electronics Ltd, you can take advantage of the internet business, cut off the wholesalers cost and other costs, and import your products directly from the manufacturer at incredible prices.
Prompt Delivery. Most units are in stock all the time, standard units will be completed within 1-3 days if they are sold out, it is great help for you if your project must be completed before deadline.
Prompt Service. Mails will be replied within 24 hours We work 6 days  a week.
★Return Policy
All mails will be replied to within 24 hours except on weekend and holidays.
Every item is manufactured under Strict Quality-Assurance Guidelines. If you are dissatisfied for any reason, please return the product to us, and we'll refund your money(not  including  shipping fees).
Please ensure that return items are not used.
Return items must be Posted within 7 days of receipt.
Please inform us via email before posting your return package.
•We accept PayPal only. 
•We only ship item to your PayPal verified address. 
•Payment must be received within 3 Days from the date of purchase. 
•Please leave note in PayPal when making the payment if you have any special request (colors/size).
Orders will be processed instantly and dispatched in same day normally, so we do NOT accept any Email/Message note before or after you place orders. 
★Import tax : 
 We will dispatch the item as SAMPLE or GIFT ,  label the total amount on the custom declare invoice .
 Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to buying.




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Items can be returned for a refund or exchange within 60 days of the date of purchase. But the reason for returns caused by yourself (eg, size, color you choose), cannot be accepted. Special circumstances may require partnership with corporate business partners. For more information, please contact our customer service. We shall ship the items via DHL or USPS Once your order is processed you will receive email notification with shipment tracking number. All delivery standards begin when you receive this email. If order is placed after 3:00 PM CST on Friday or on the weekend, the earliest it will ship is Monday.