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Quick Details

  • D/C: 2017
  • Package: smd
  • Model Number: VT-DTMSX3-433M
  • Type: wireless module
  • Brand Name: V-CHIP
  • Place of Origin: Guangdong, China (Mainland)
  • Product name: China Direct Sale Uart 433Mhz Electronic components Transmitter Module
  • Central frequency: 433MHz
  • Output Power: Max: 16dBm(0.4W)
  • Sensitivity: -125dBm
  • USB Interface Rate: Max 115200kbps
  • Transmit Current: <140mA
  • Receive Current: <27mA
  • Input Voltage: 3.3VDC
  • Antenna: 50ohm
  • Size: 38.50*18.50*2.60mm

Packaging & Delivery

Packaging Details Standard package
Delivery Time Shipped in 3 days after payment

China Direct Sale Uart 433Mhz Electronic components Transmitter Module

 

The VT-DTMSX3-433M module is designed as a wireless sub module for wireless communication between devices like controls, POS systems, data collectors etc which based on TI’s high performance CC112x chip, integrated 32 bit ARM Energy Micro Cortex-M3. Industrial grade chip and high performance transceiver were integrated on small size RF module.

VT-DTMSX3-433M is transparent transmit, means received same as transmitted. Outstanding advantage is long transmitting distance, low power, multi port etc. User does not need to programming and control it, short R&D time. VT-DTMSX3-433M take use of MCU package and processing, then user use UART port to realize wireless transmit. This module is easy to use for users that no need to program software for wireless communication.

 

Detail Parameters

 

 

Test operating conditions:Ta=25°C,VCC=3.3V if nothing else stated.

 

Parameter

Value

Condition/Note

Center Frequency

433MHz

Programmable

Modulation

2-FSK

Customize for ASK/FSK/OOK/MSK

Output Power

Max: 16dBm(0.4W)

Programmable

Sensitivity

-125dBm

1200bps DEV=4KHz  RBW=25KHz

Radio Data Rate

Max 200kbps

Programmable

USB Interface Rate

Max 115200kbps

Programmable

Protocol Format

8N1

Programmable

Transmit Current

<65mA

Depend on output power

Receive Current

<27mA

 

Sleep Current

<3uA

 

Distance

1800M

Open area; 3dBi antenna, max power, lowest data rate

Operate Humidity

10%~90%

 

Operate Temperature

-40℃~85

 

Input Voltage

3.3VDC

±100mV

Antenna

50ohm

 

Size

38.50*18.50*2.60mm

 

Note:

1. Noted that higher radio data rate causes of shorter communication disdance.

2. Noted that higher radio data rate causes of lower sensitivity.

3. Noted that lower input voltage causes of lower output power.

4. Noted that the operate temperature out of range -40℃~85℃ will influence the              center frequency.

5. Be sure to use a match antenna and mount it in the right way.

6.The environment will influence the communication disdance much.

Features

 

Applications

 

 

Pin

Type

Description

VCC

Power

Default 3.3V

GND

Power Ground

GND

RESET

Input

Reset, low active

PB14

Output

Low when receive data else high

PD6

Input

NC

PD7

Output

Low

PC14

Output

Low when transmit else high

TXD

Output

UART transmit

RXD

Input

UART receive

ANT

Input/output

Athena, 50ohm

 

 

 

Operating Modes

The device can be used in the following operating modes:

1. Transceiver, Buffered data transceiver

2. Setting Mode

 The device is default on transparent mode and can select by commands. See Setting Mode part in detail.

Troubles and Processing Methods

Troubles

Processing Methods

Short distance

1. Check the input voltage; ensure it is not lower than 4.5VDC.

2. Configure the output power parameter to the max.

3. Check the antenna; ensure it is not to be shielded.

4. Configure the radio data rate to a lower value.

Communicating failed

1. Check the input voltage.

2. Reconnect the module to the host.

3. Addresses of the communicating modules are all right.

High error rate

1. Antenna does not match to the module.

2. Co-Channel interference, try another channel.

 

Related Product
Company Information

 

Packaging & Shipping

 

FAQ

Description

Reason and Solution

Can’t communication

1.The power supply connect not well, check the module VCC whether it is out of maximum rating.

2.The signal line connect not well, check the module SPI interface.

3.The settings of the transmitter module and receiver module are not the same. Check these modules’ register configuration.

4.Signal block. If the transmitter work with a high TX power, and the receiver was put at a short distance(<0.5m), maybe there is a signal block to make no communication.

Communication distance is too short

1.The application environment is too bad or the antenna is shield. Put the antenna to a better place outside or higher throw a coaxial line , replace it with a higher gain antenna.

2.The work space contains a same frequency interference source, or a strong magnetic field interference, power source disturbance. Try to change the carrier frequency or get far away from the source of the disturbance.

3.The power supply is not strong. Check the voltage and the current whether it is enough.

High data error

1.The power supply ripple is too big, Change the power supply.

2.Check the module register configuration, it is recommended to set as the CC1120-datasheet.

3.There is a carrier frequency interference, change the channel.

4.The antenna unmatched to the module RF interface, change another matched antenna.

 

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