Pay in 4 interest-free payments of $56.25 Learn more
Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
Two digital output lines (interrupt and data ready)
4mm inner diameter / 6
Internally
but also can use the digital pin of Arduino to power on and reset the SIM900 module
MQ9 Gas Sensor datasheet
RS-232 to TTL Converter (Industrial Standard) hc151 Two digital output lines (interruptRS 232 to TTL converter (UT 210) converts data (TXD, RXD) of RS 232 to TTL signal. The TTL electrical level is 5V, without external power supply. It adopts unique "RS 232 charge pump" technology to drive the system and gains power without initializing the RS 232 serial port. The RS 232 to TTL converter has an automatic transmission and reception conversion with no delay. It has a unique I O circuit auto control data flow direction. With these, you
US$ 19.95
US$ 16.95
US$ 25.00
US$ 25.00
US$ 19.95
US$ 25.00