diff --git a/lib/Hoymiles/src/inverters/HERF_2CH.cpp b/lib/Hoymiles/src/inverters/HERF_2CH.cpp
index 37799d14b..f0216a643 100644
--- a/lib/Hoymiles/src/inverters/HERF_2CH.cpp
+++ b/lib/Hoymiles/src/inverters/HERF_2CH.cpp
@@ -41,7 +41,7 @@ HERF_2CH::HERF_2CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HERF_2CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x282100000000 && serial <= 0x282199999999
+    // serial >= 0x282100000000 && serial <= 0x2821ffffffff
     uint16_t preSerial = (serial >> 32) & 0xffff;
     return preSerial == 0x2821;
 }
diff --git a/lib/Hoymiles/src/inverters/HERF_4CH.cpp b/lib/Hoymiles/src/inverters/HERF_4CH.cpp
index f47b35e2d..dcd01b6d5 100644
--- a/lib/Hoymiles/src/inverters/HERF_4CH.cpp
+++ b/lib/Hoymiles/src/inverters/HERF_4CH.cpp
@@ -9,7 +9,7 @@ HERF_4CH::HERF_4CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HERF_4CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x280100000000 && serial <= 0x280199999999
+    // serial >= 0x280100000000 && serial <= 0x2801ffffffff
     uint16_t preSerial = (serial >> 32) & 0xffff;
     return preSerial == 0x2801;
 }
diff --git a/lib/Hoymiles/src/inverters/HMS_1CH.cpp b/lib/Hoymiles/src/inverters/HMS_1CH.cpp
index 5d906e58f..2c7e3857b 100644
--- a/lib/Hoymiles/src/inverters/HMS_1CH.cpp
+++ b/lib/Hoymiles/src/inverters/HMS_1CH.cpp
@@ -33,7 +33,7 @@ HMS_1CH::HMS_1CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HMS_1CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x112400000000 && serial <= 0x112499999999
+    // serial >= 0x112400000000 && serial <= 0x1124ffffffff
     uint16_t preSerial = (serial >> 32) & 0xffff;
     return preSerial == 0x1124;
 }
diff --git a/lib/Hoymiles/src/inverters/HMS_1CHv2.cpp b/lib/Hoymiles/src/inverters/HMS_1CHv2.cpp
index 2cfaa28b0..d79d2c1d2 100644
--- a/lib/Hoymiles/src/inverters/HMS_1CHv2.cpp
+++ b/lib/Hoymiles/src/inverters/HMS_1CHv2.cpp
@@ -33,7 +33,7 @@ HMS_1CHv2::HMS_1CHv2(HoymilesRadio* radio, const uint64_t serial)
 
 bool HMS_1CHv2::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x112500000000 && serial <= 0x112599999999
+    // serial >= 0x112500000000 && serial <= 0x1125ffffffff
     uint16_t preSerial = (serial >> 32) & 0xffff;
     return preSerial == 0x1125;
 }
diff --git a/lib/Hoymiles/src/inverters/HMS_2CH.cpp b/lib/Hoymiles/src/inverters/HMS_2CH.cpp
index 56c7fc69b..4a700a9a9 100644
--- a/lib/Hoymiles/src/inverters/HMS_2CH.cpp
+++ b/lib/Hoymiles/src/inverters/HMS_2CH.cpp
@@ -40,7 +40,7 @@ HMS_2CH::HMS_2CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HMS_2CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x114400000000 && serial <= 0x114499999999
+    // serial >= 0x114400000000 && serial <= 0x1144ffffffff
     uint16_t preSerial = (serial >> 32) & 0xffff;
     return preSerial == 0x1144;
 }
diff --git a/lib/Hoymiles/src/inverters/HMS_4CH.cpp b/lib/Hoymiles/src/inverters/HMS_4CH.cpp
index 9aeaf1065..b3cf1f380 100644
--- a/lib/Hoymiles/src/inverters/HMS_4CH.cpp
+++ b/lib/Hoymiles/src/inverters/HMS_4CH.cpp
@@ -54,7 +54,7 @@ HMS_4CH::HMS_4CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HMS_4CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x116400000000 && serial <= 0x116499999999
+    // serial >= 0x116400000000 && serial <= 0x1164ffffffff
     uint16_t preSerial = (serial >> 32) & 0xffff;
     return preSerial == 0x1164;
 }
diff --git a/lib/Hoymiles/src/inverters/HMT_4CH.cpp b/lib/Hoymiles/src/inverters/HMT_4CH.cpp
index d92a510f4..609e3350f 100644
--- a/lib/Hoymiles/src/inverters/HMT_4CH.cpp
+++ b/lib/Hoymiles/src/inverters/HMT_4CH.cpp
@@ -63,7 +63,7 @@ HMT_4CH::HMT_4CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HMT_4CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x136100000000 && serial <= 0x136199999999
+    // serial >= 0x136100000000 && serial <= 0x1361ffffffff
     uint16_t preSerial = (serial >> 32) & 0xffff;
     return preSerial == 0x1361;
 }
diff --git a/lib/Hoymiles/src/inverters/HMT_6CH.cpp b/lib/Hoymiles/src/inverters/HMT_6CH.cpp
index 757cf91de..f8b9f4075 100644
--- a/lib/Hoymiles/src/inverters/HMT_6CH.cpp
+++ b/lib/Hoymiles/src/inverters/HMT_6CH.cpp
@@ -77,7 +77,7 @@ HMT_6CH::HMT_6CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HMT_6CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x138200000000 && serial <= 0x138299999999
+    // serial >= 0x138200000000 && serial <= 0x1382ffffffff
     uint16_t preSerial = (serial >> 32) & 0xffff;
     return preSerial == 0x1382;
 }
diff --git a/lib/Hoymiles/src/inverters/HM_1CH.cpp b/lib/Hoymiles/src/inverters/HM_1CH.cpp
index 670b7dbe2..0f0c64c23 100644
--- a/lib/Hoymiles/src/inverters/HM_1CH.cpp
+++ b/lib/Hoymiles/src/inverters/HM_1CH.cpp
@@ -33,7 +33,7 @@ HM_1CH::HM_1CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HM_1CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x112100000000 && serial <= 0x112199999999
+    // serial >= 0x112100000000 && serial <= 0x1121ffffffff
 
     uint8_t preId[2];
     preId[0] = (uint8_t)(serial >> 40);
diff --git a/lib/Hoymiles/src/inverters/HM_2CH.cpp b/lib/Hoymiles/src/inverters/HM_2CH.cpp
index 6d9b7ca91..02dd8ae4f 100644
--- a/lib/Hoymiles/src/inverters/HM_2CH.cpp
+++ b/lib/Hoymiles/src/inverters/HM_2CH.cpp
@@ -41,7 +41,7 @@ HM_2CH::HM_2CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HM_2CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x114100000000 && serial <= 0x114199999999
+    // serial >= 0x114100000000 && serial <= 0x1141ffffffff
 
     uint8_t preId[2];
     preId[0] = (uint8_t)(serial >> 40);
diff --git a/lib/Hoymiles/src/inverters/HM_4CH.cpp b/lib/Hoymiles/src/inverters/HM_4CH.cpp
index 13ca061a9..586248b59 100644
--- a/lib/Hoymiles/src/inverters/HM_4CH.cpp
+++ b/lib/Hoymiles/src/inverters/HM_4CH.cpp
@@ -54,7 +54,7 @@ HM_4CH::HM_4CH(HoymilesRadio* radio, const uint64_t serial)
 
 bool HM_4CH::isValidSerial(const uint64_t serial)
 {
-    // serial >= 0x116100000000 && serial <= 0x116199999999
+    // serial >= 0x116100000000 && serial <= 0x1161ffffffff
 
     uint8_t preId[2];
     preId[0] = (uint8_t)(serial >> 40);