From 88cec5dfa673aceae49d166957a8615edca87a5c Mon Sep 17 00:00:00 2001
From: Koen Kanters <koenkanters94@gmail.com>
Date: Wed, 13 Feb 2019 20:06:14 +0100
Subject: [PATCH] Check for valid Zigbee channel.
 https://github.com/Koenkk/zigbee2mqtt/issues/1077

---
 lib/zigbee.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/zigbee.js b/lib/zigbee.js
index b2f9e99c9..ae43f6631 100644
--- a/lib/zigbee.js
+++ b/lib/zigbee.js
@@ -8,6 +8,11 @@ const Queue = require('queue');
 const zclId = require('zcl-id');
 
 const advancedSettings = settings.get().advanced;
+
+if (advancedSettings.channel < 11 || advancedSettings.channel > 26) {
+    throw new Error(`'${advancedSettings.channel}' is an invalid channel, use a channel between 11 - 26.`);
+}
+
 const shepherdSettings = {
     net: {
         panId: advancedSettings.pan_id,