Select for Trig. Run a female-to-female jumper wire from the sensor's Trig pin to the S pin of row 2.
A 6-pin header mapped to the Serial Peripheral Interface (SPI) pins (MOSI, MISO, SCK, and Select). arduino sensor shield v5 0 manual
Positive terminal of external battery or power supply. GND / - : Negative terminal of external power supply. Select for Trig
Ultrasonic sensors require four connections: VCC, GND, Trigger, and Echo. arduino sensor shield v5 0 manual