Banggood.com
Scroll down the page to compare the IR Receiver price at different stores. TSOP4838 – IR Receiver module that operates at frequency of 38KHz. You can supply voltage between 2.7V and 5.5V.
$4.99
in stock
5 new
from $1.72
as of July 7, 2020 8:50 am
Ebay.com
€2.79
in stock
1 new
from €2.79
as of July 7, 2020 8:50 am
Amazon.es
£2.79
in stock
1 new
from £2.79
as of July 7, 2020 8:50 am
Amazon.co.uk
€3.31
in stock
1 new
from €3.31
as of July 7, 2020 8:50 am
Amazon.de