| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More |
|---|---|---|---|---|---|
| Price /Unit | $34.64 | $33.94 | $32.88 | $31.46 | Contact US |
Waveshare USB to RS232/485/TTL Interface Converter Communication Module (CH343G Chip) w/ Isolation
$29.31
Waveshare USB to RS232/485/TTL Interface Converter Communication Module (FT232RNL) w/ Isolation
$33.20
Mini Duplex Hotspot Motherboard for MMDVM Digital Modem Box and 433MHz Antenna Support for DMR / D-Star / NXDN / POCSAG
$32.08
SIM900A GSM/GPRS Moudle Development Board Learning Board Surpass TC35 SIM300 Video Course Source Code
Specification:
- Dimension: 9.3*5.1*1.5（cm）
- This development board has multifunctions, compatible with GTM900b/TC35 development board
- The core board can be directly used into project, reducing the developing time
Hardware resources:
- GSM/GPRS development board, SIM900 module is built in TCP/IP agreement
- Support computer serial port(232 level) connection and singlechip MCU, USB to TTL(3.3v-5v) direct connection
- Adopts plug stick tpye SIM card base, convenient operation with SIM card to protect circuit
- Hardware supports singlechip to control module starting up and shutting down, support singlechip to detect net online state
- Develpment board power supply 5V-12V, current should be above 1A, 2A is better, power indicatior light, signal indicator light onboard
- Sound interface is reserved with audio processing circuit
