SR_T300

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  • Model: SR_T300
  • Type: 300m distance
  • Band: 27M-520M
  • Transmit Power: 10DBM
  • Receive sensivitity: -110dbm
  • Size: 26mm x 26mm

                                            SR-T300

Children toy FM radio module

  1. Outline

SR_T300 module is perfect for children toy walkie talkie and other short distance intercom  application case.  Only an external antenna, battery, speaker, microphone needed for combine a completed  toy  walkie  talkie

 

  1. Performance

Half_duplex FM transceiver

     Power Supply 3.3 - 7.0V;

     2 Channel selectable  

             CH1: 462.125MHZ  

CH2: 462.175MHZ

            Comment:  other frequency can be customer ordered:

                             26.175M~27.5MHZ;

                             40.66M40.7MHZ

                             49.820M49.9MHZ

                             400M470MHZ

    Automatic Mute;

size   26 X 26 MM;

    communication distance   300m @ UHF;       

  1. Size and pin assignment

3.1 pin assignment

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3.2 module size

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3.3 pin comment

 

Pin number

Name

 comment

1

BAT+

 DC power supply, 3.3V-7V

2

GND

  GND

3

SP-

   Speaker  -

4

SP+

   Speaker  +

5

MIC+

   Microphone  +

6

GND

   GND

7

PROG

   NC.  ( No connected.)

8

CALL

  CALL TONE 提示音: 1: 呼叫; 0: 停止呼叫

9

PTT

  Push to Talk1 发射; 0 接收

 10

CH

  Channel select ;   

NC: 462.125M;   GND: 462.175M

      11

+3V

  Module +3V output;

      12

TEST

  NC, 

      13

GND

  GND

      14

ANT

  Antenna

      15

GND

  GND

 

 

  1. Module Application circuit

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