From 47d3f008ad21b089e46d3f2fb28d4139f0b41a64 Mon Sep 17 00:00:00 2001
From: Matthias Prinke <83612361+matthias-bs@users.noreply.github.com>
Date: Thu, 6 Jun 2024 09:12:27 +0200
Subject: [PATCH] Update README.md

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 7536d4b..fb355bc 100644
--- a/README.md
+++ b/README.md
@@ -253,6 +253,10 @@ Create an account and set up a device configuration in your LoRaWAN network prov
 * Device class A
 * Over the air activation (OTAA)
 
+> [!IMPORTANT]
+> Check the maximum permitted payload size and uplink/downlink rate according to your regional parameters and change the configuration if required!
+> See [Airtime calculator for LoRaWAN](https://avbentem.github.io/airtime-calculator/ttn/eu868).
+
 ## Software Build Configuration
 
 ### Required Configuration