This edition features:-

1 , this panel uses high-power power chips to the module TC35 supply, external power supply of 12V / 1A or 9V / 1A, to ensure that the overall performance and service life stability, increased power at high power inductor , to ensure stability of the power.

2 , for the user to design the development, the board increases the ringer indicator , the caller can clearly see the light flashes; increase in signal lights , the module was started, may be determined according to the operating state lights development board; module functions such as voice foot Both are connected by pins , and users who need voice function can purchase the voice adapter board by themselves;

3 , the design of the serial three-port switch with each other , the user may be required shorting according to actual needs; lead TTL interface , to facilitate the development of other MCU board communication;

4 , hand / automatic start selection to maximize the user's start control of the TC35, if other MCUs need to directly control the start of the TC35, you can remove the short connector, use the DuPont line from the "hand / automatic selection" intermediate pin lead directly Enter the MCU control pin (Note: The control level must not exceed 5V).

5 ,The SIM card holder is soldered to the 6-pin socket by default, and the user can solder the 8-pin card holder by itself . Support mobile, Unicom SIM card.

6 , on-board high-quality serial port level conversion chip , can be connected to the computer through a nine-pin serial port, using the host computer software to test and develop the development board.