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
€5.36
4 new
from €5.36
as of September 26, 2018 9:10 am
Amazon.de
$9.75
1 new
from $9.75
as of September 26, 2018 9:10 am
£7.99
1 new
from £7.99
as of September 26, 2018 9:10 am
€8.99
1 new
from €8.99
as of September 26, 2018 9:10 am