Feature

●DTMF V1 is a dual tone multi-frequency decoding coding module.
●Code Publishing Process: After input the ASCII code from the serial port, the module converts to dual tone multi-frequency codes, then converted to audio signal and transmitted through the 3.5MM audio interface.
●Reception Process: Use 3.5MM audio interface to convert the receiver audio signal to a dual-tone multi-frequency code, convert it to ASCII code and send it via serial port.
●The module can use an audio cable to connect input and output simultaneously, transmit data and receive data at the same time, and the module receives 30 serial data at a time, waiting for data to be sent.
●Application: ●Remote Device Control Dual tone multi-frequency code decoding. Dual tone multi-frequency code encoding


Description

Technical Parameter Table:
1. Operating voltage: 5 V DC
2. Operating current: <10mA
3. Operating temperature: -40 - 65 degrees F (-40 - 65 degrees C)
4. Storage Temperature: -40 - 65 °C (-40 - 65 °C).
5 Sizes: 1.6 x 1.2 x 0.4 inches (40 x 30 x 10 mm) (L x W x H)

Product Features:
(1) Transmits and receive data via the serial port.
(2) Audio line can connect the input and output together, transmit data at the same time and use to receive data.
(3) The module receives 30 data serial ports at a time and wait for it to be sent.
(4) Received data is transmitted via the serial port.

Drive Mode: Serial Port Communication Format: Baud Rate 9600, No Parity, Data 8 Bit, Stop 1

Application: Dual Tone Signal Decoding and Encoding Remote Control Device

Module Interface:
(1)Communication Interface P2:
5V: Positive power connector (5V)
GND: Power Ground Interface
RXD: Connect to receiver end of the module, microcontroller (MCU) transmitting terminal TXD
TXD: Connect to transmit end end of module, microcontroller (MCU) receiver end RXD

(2) Signal input interface J1:3.5MM audio input interface.

(3) Signal output interface: J2: 3.5MM audio output interface.

Module and Wiring Block Diagrams:
Note: Do not connect the circuit module directly to the computers serial port. The circuit module must be connected to a TTL level signal (RS232-TTL module). Otherwise, the module will be damaged. (RS232 signal is negative 15 volt to positive 15 volts, and TTL232 signal is 0 volt to positive 5 volts)

Packing:
1 x Dual Tone Multi-Frequency DTMF Signal Decoding and Coding Module