| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More |
|---|---|---|---|---|---|
| Price /Unit | $15.03 | $14.73 | $14.27 | $13.65 | 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
USB SIM900A Develop Board Message GPRS Phone Receiving Sending Messagees USB Serial Port CH340
Description:
- Due to the GSM chip power, some PC USB port can not be used. Please check your PC USB port to see whether it can drive motive hard disk. Some old machine may not recognize the hard disk. You can add external power supply, or use HUB with power supply, or use USB extension cable with power supply
- USB cable all adopts CH340G of good quality
- GSM module size is m590 dual frequency module
- Adopting imported card base, can change card while power on
- Back capacitor 1000uf solves the inefficiency of USB power supply
- Adopting 15cm PCB antenna, good signal
- This module can realize PC receiving mesages or calling numbers
