When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The onboard SMA (default) and IPXmini antenna interface, SIM900A interface reserved reset. GND - GNDSIMR SIM900A RXD, TTL level. can not be directly connected to the 232 levelSIMT SIM900A TXD, TTL level.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.