diff --git a/README.md b/README.md
index efa5d3e..685b826 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,8 @@ I have a lamp in my room where I intercepted the powerline using a relais and ES
 1. [Wemos D1 Mini](https://wiki.wemos.cc/products:d1:d1_mini)
 2. [Wemos D1 Mini Relais Board](https://wiki.wemos.cc/products:d1_mini_shields:relay_shield)
 3. [IKEA Aläng Lamp](https://www.ikea.com/at/de/catalog/products/60176039/)
-4. Random 5V 1A Phone charger with USB plug unsoldered (see photo)
+4. Random 5V 1A Phone charger with USB plug unsoldered (see photo)a
+5. (optional) [Amazon Dash Button](https://www.amazon.com/gp/help/customer/display.html/ref=hp_left_v4_sib?ie=UTF8&nodeId=201746300)
 
 ![Installation inside lamp](/photo.jpg)