Scroll down to compare the Ultrasonic Sensor (HC-SR04) price at different stores.
The HC-SR04 ultrasonic sensor uses sonar to determine distance to an object like bats do. It offers excellent non-contact range detection with high accuracy and stable readings in an easy-to-use package. Learn how to use the ultrasonic sensor with Arduino: Complete Guide for Ultrasonic Sensor HC-SR04
Ebay.com
Aliexpress.com
Shareasale.com
€6.08
5 new
from €6.08
as of April 26, 2018 7:58 am
Amazon.de
£6.95
1 new
from £6.95
as of April 26, 2018 7:58 am
$9.79
1 new
from $9.79
as of April 26, 2018 7:58 am
€8.77
1 new
from €8.77
as of April 26, 2018 7:58 am