SR_T300
&n
- 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
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；
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;
40.66M～40.7MHZ
49.820M～49.9MHZ
400M～470MHZ
Automatic Mute;
size： 26 X 26 MM;
communication distance： 300m @ UHF;
Size and pin assignment
3.1 pin assignment
3.2 module size
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 Talk，1： 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 |
Module Application circuit
