TMK01-M/02-M/04-M is a multi-party call intercom module. The module is mainly aimed at commercial customers. The module adopts broadband spread spectrum technology, has high receiving sensitivity, is energy-saving and environmentally friendly, and can be specially used for secondary system integration and secondary development to support all intercom functions.
The module has three working modes: intercom mode, relay mode, and intercom + relay mode. When set to intercom mode, it is only used as a full duplex intercom module; when set to relay mode, it is only used as a full duplex intercom relay. At this time, the number of channels will be halved, that is, if it is set to 8 channels, the actual work will be 4 channels; when set to intercom + relay mode, relay and intercom functions can be realized at the same time, and the number of channels will be halved at this time.
The module supports data transmission function, can send data commands in normal state and intercom state, and realize broadcast or private transmission.
The module provides two parameter control interfaces, one user parameter interface, and one developer parameter interface. The user interface is a USB interface, and the developer interface is a UART serial communication interface. Ordinary users can use the host software provided by the company to modify, read and upgrade software parameters. Developers can achieve all control functions through serial ports and obtain system working status.
The module control functions include modifying the working frequency, changing the priority, adjusting the working mode, controlling the transmitter (PPT), controlling the standby and all intercom-related operations.
The module only needs to externally connect MIC, audio amplifier and antenna to form a complete full duplex multi-party call intercom.
Features:
Full duplex, supports 8-party call at the same time, unlimited receiving
8 parties are dynamically changing. When one party exits, others can enter.
Reserve a call position for designated personnel to ensure they can always enter
Two modes: push-to-talk intercom and VOX intercom
Support data transmission
Group call: you can specify to call a certain person or group call
Working frequency:150~960MHz
Operating voltage:2.8V~4.8V
Output: External 0.8W,8Ω speaker
Communication distance:1~5km in open and unshielded environment
UART serial communication interface
Can work while charging
Applications:
High-end full duplex intercom development
Command and control system
Property management
Security for special scenarios
PBX
Conference management system development
PIN Definition
| Num |
TMK01-M PIN Num |
TMK02-M PIN Num |
TMK04-M PIN Num |
Name |
I/O |
Description |
Note |
| 1 |
2 |
2 |
2 |
VDDIN |
I |
Power Supply |
2.8V-4.2V |
| 2 |
7 |
7 |
7 |
MIC_P |
I |
Differential microphone input + |
0~50mV, single-ended signal needs to MIC+ be connected |
| 3 |
6 |
6 |
6 |
MIC_N |
I |
Differential microphone input - |
0~50mV, single-ended input MIC- needs to be grounded. |
| 4 |
4 |
4 |
4 |
SPK_P |
O |
Differential speaker output positive |
8ohm/0.8W, |
| 5 |
5 |
5 |
5 |
SPK_N |
O |
Differential speaker output negative |
8ohm/0.8W, |
| 6 |
21 |
21 |
21 |
VBUS |
I |
USB interface bus voltage |
4.5V~5.5V |
| 7 |
23 |
23 |
23 |
USB_DP |
I/O |
USB_DP I/O Differential USB data line positive |
0~3.3V |
| 8 |
22 |
22 |
22 |
USB_DN |
I/O |
USB_DN I/O Differential USB data line negative |
0~3.3V |
| 9 |
1,3,8,12,13,16,18,20,24 |
1,3,8,12,13,16,17,18,20,24 |
1,3,8,12,13,15,16,17,18,19,20,24 |
GND |
P |
GND |
Power ground or signal ground |
| 10 |
9 |
9 |
9 |
UART_TX |
O |
UART transmit output data |
460800 baud rate, one start bit, 8 data bits, one stop bit |
| 11 |
10 |
10 |
10 |
UART_RX |
I |
UART input |
460800 baud rate, one start bit, 8 data bits, one stop bit |
| 12 |
11 |
11 |
11 |
COM |
I/O |
Additional control input |
Pull high |
| 13 |
15 |
15 |
None |
RX_EN |
O |
Receive indicator |
High level is valid |
| 14 |
14 |
14 |
None |
TX_EN |
O |
Transmit indicator |
High level is valid |
| 15 |
None |
19 |
14 |
RF |
O |
RF input/output |
TMK04 is 0~21dBm,TMK02 is 20~28dBm, Serial port control, 1dBm precision |
| 16 |
19 |
None |
None |
TX |
O |
RF output |
0~21dBm, serial port control,1dBm precision |
| 17 |
17 |
None |
None |
RX |
I |
RF input |
Less than 10dBm |
Useful Link:
TMK01-M/02-M/04-M full duplex digital Walkie Talkie wireless module User Manual
