| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More |
|---|---|---|---|---|---|
| Price /Unit | $17.00 | $16.66 | $16.14 | $15.44 | 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 Module GSM/ GPRS Wireless Data Transmission V4 Enhanced Version w/ PCB Antenna & Glue Stick Antenna
Description:
Power supply:
- 5V version: this module power supply range: 4.4-5.5V, we can use USB3.0 or 5Vswitch for power supplying. But be sure the power supply can not be larger than 5.5V, or it will burn down
- 4.2V version: this module power supply range: 3.7---4.8V, can be powered by lipo battery. But be sure the power should not larger than 4.8V
Serail port
- This module is TTL level interface, can be directly connect with singlechip, ARM. No need converter. If connected with PC, you will need USB to TTL module. Do not connect with RS232 RS485 serial port, otherwise it will burn down module
Consumption:
- Shutdown current: 4mA
- Working current: 50mA
- Standby current: 20mA
- TX peak current: 1A
