Ultrasonic Sensor - HC-SR04 help in range measurement
SparkFun ToF Range Finder Breakout - VL6180 is a breakout board for the sensor that can measure distance in a accurate manner.
GPS Bee kit (with Mini Embedded Antenna) combines the Xbee with a GPS module for effective and flexible positioning system.
The FDC1004 is a single-chip IC for capacitance measurement for applications including proximity sensing and liquid level sensing.
Infrared proximity sensor is a short range sensor that can detect any physical presence using IR.
VL53L0X is a Time of flight(ToF) ranging sensor with high precision ranging which can measure a distance of up to 2m.
RPLIDAR A2 is the latest addition to the LIDAR family that rotates 360 degrees with a range of 6m and scan at the rate of 10Hz.
This LIDAR-Lite is a distance measurement sensor from Garmin™. It is a light weight module with efficient power consumption.The scan range is at 40m.
Liquid flow meter measures/checks the flow of water to monitor and avoid wastage.
SparkFun MPU-9250 IMU Breakout is smaller with efficient power consumption and combines two chips.
Sparkfun ToF Range Finder is accurate,no noise containing a 2.8V regulator that safeguards the board.
Adafruit Capacitive Touch HAT for Raspberry Pi - Mini Kit - MPR121 consists of 12 touch reactive sensors that react at one time.