Dual Tone Multi-Frequency DTMF Signal Decoding and Encoding Module, US $24.88 – Picture 0

Dual Tone Multi-Frequency DTMF Signal Decoding and Encoding Module, US $24.88 – Picture 1

Dual Tone Multi-frequency Dtmf Signal Decoding And Encoding Module

US $24.88

Shenzhen ,Guangdong, China
Jan 29th

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Dual Tone Multi-Frequency DTMF Signal Decoding and Encoding Module Description: DTMF V1 is a dual-tone multi-frequency decoding encoding module. Issued code process: enter ASCII code via the serial port, after received by the module, it converted to dual-tone multi-frequency code, and then converted to an audio signal, sent through the 3.5MM audio interface. Received process code: convert the received audio signal into a dual-tone multi-frequency code with 3.5MM audio interface, and then to ASCII codes issued through the serial port. This module can connect the input and output together through the audio cables , send data and receive data at the same time, the module can be a wait to receive serial data issued 30. Application: remote device control; Dual-tone multi-frequency code decoding; Dual-tone multi-frequency coding; Operating voltage: 5VDC Operating Current: <10mA Working temperature: -40 °C ~ 65 °C Celsius Storage temperature: -40 °C ~ 65 °C Celsius Size: 40 * 30 * 10mm length X width X height Features: (1) receive and send data through the serial port. (2) can connected input and output together via audio cable, Issued data and receive data simultaneously. (3) a receiver module 30 serial data waiting to be sent. (4) received data send out through the serial port in real-time. 5, the drive mode: serial port communication Format: 9600 baud, no parity, 8 data bits, 1 stop 6, Application: two-tone signal decoding and encoding; remote control devices. 7, the module interface: (1) Communication Interface P2: 5V: power supply positive Interface (5V). GND: Power to the ground interface. RXD: Receive end module; connected microcontroller (MCU) sending end TXD TXD: sending end module; connected microcontroller (MCU) receiving terminal RXD (2) signal input interface J1: Is 3.5MM audio input interface. (3) signal output interface J2: is 3.5MM audio output interface. Module and wiring block diagram: Note: Please do not directly put the circuit module and the computer serial port togethor, you need to use the RS232 to TTL module to convert the signals into TTL level signals, then can be directly connected to the circuit module with the computer's serial port, otherwise it will damage the module. (RS232 signal is negative to positive 15 volts 15 volts, TTL232 signal is 0 volts positive 5 volts) Shipping & Handling Policy · Generally, delivery time is 10-20 business days to USA, United Kingdom, Australia and 15-30 days to most other countries. · All orders will be processed within 48 hours from the date of payment .The delivery confirmation will be sent ebay message when your order is processed · We will make shipment according to the address you put on eBay, if you want us to ship items to a different address please contact us before making the payment. International Buyers Note: 1) Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. 2) Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. Payment Policy We accept Paypal only. Returns Policy · We always take customer service seriously and want you to be 100% happy with your shopping experience here. If you are unsatisfied with our item or service, then please follow the good eBay practice to contact us before leaving any feedback and return it within 14 days for a replacement or money back. · Please contact me before you return it. · Buyer is responsible for the shipping cost of return postage. · Shipping and insurance costs will not be refunded. · We are committed to resolve all issues in a friendly and satisfactory manner. Contact us: If you have any problems, we are very glad to help you. We are handling large volume emails every day. Please allow us to reply your email within 24hrs Feedback: · Dear buyers, we appreciate your business, if you are satisfied with our service, please leave us a positive feedback . When you rate the shipping time part please take international transit into consideration. · Your recognition will make us more confident to develop business and serve you better. · Our goal is to make sure you are a happy buyer and pleasant shopping with us. · Please email us before leaving any 1 or 2 ratings, negative feedback or open any dispute. · We understand the concerns and frustrations you might have, and will do our endeavor to resolve the issues. Please give us the opportunity to resolve any problem. thank you !