diff --git a/src/AgValue.cpp b/src/AgValue.cpp
index 541edc1..38c29d1 100644
--- a/src/AgValue.cpp
+++ b/src/AgValue.cpp
@@ -727,4 +727,12 @@ String Measurements::agValueTypeStr(AgValueType type) {
   };
 
   return str;
+}
+
+void Measurements::validateChannel(int ch) {
+  if (ch != 1 && ch != 2) {
+    Serial.printf("ERROR! Channel %d is undefined. Only channel 1 or 2 is the optional value!", ch);
+    delay(1000);
+    assert(0);
+  }
 }
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