diff --git a/lib/Hoymiles/src/HoymilesRadio_CMT.cpp b/lib/Hoymiles/src/HoymilesRadio_CMT.cpp
index 5a0b4492a..d42b4d2e8 100644
--- a/lib/Hoymiles/src/HoymilesRadio_CMT.cpp
+++ b/lib/Hoymiles/src/HoymilesRadio_CMT.cpp
@@ -201,6 +201,11 @@ uint32_t HoymilesRadio_CMT::getMaxFrequency()
     return MAX_FREQ;
 }
 
+uint32_t HoymilesRadio_CMT::getChannelWidth()
+{
+    return FH_OFFSET * CMT2300A_ONE_STEP_SIZE;
+}
+
 void ARDUINO_ISR_ATTR HoymilesRadio_CMT::handleInt1()
 {
     _packetSent = true;
diff --git a/lib/Hoymiles/src/HoymilesRadio_CMT.h b/lib/Hoymiles/src/HoymilesRadio_CMT.h
index 11d34fdfc..d9858c832 100644
--- a/lib/Hoymiles/src/HoymilesRadio_CMT.h
+++ b/lib/Hoymiles/src/HoymilesRadio_CMT.h
@@ -28,6 +28,7 @@ class HoymilesRadio_CMT : public HoymilesRadio {
 
     static uint32_t getMinFrequency();
     static uint32_t getMaxFrequency();
+    static uint32_t getChannelWidth();
 
     static uint32_t getFrequencyFromChannel(const uint8_t channel);
     static uint8_t getChannelFromFrequency(const uint32_t frequency);
diff --git a/src/WebApi_dtu.cpp b/src/WebApi_dtu.cpp
index c8a87678f..ccf0aa08f 100644
--- a/src/WebApi_dtu.cpp
+++ b/src/WebApi_dtu.cpp
@@ -45,6 +45,9 @@ void WebApiDtuClass::onDtuAdminGet(AsyncWebServerRequest* request)
     root["cmt_enabled"] = Hoymiles.getRadioCmt()->isInitialized();
     root["cmt_palevel"] = config.Dtu.Cmt.PaLevel;
     root["cmt_frequency"] = config.Dtu.Cmt.Frequency;
+    root["cmt_min_freq"] = Hoymiles.getRadioCmt()->getMinFrequency();
+    root["cmt_max_freq"] = Hoymiles.getRadioCmt()->getMaxFrequency();
+    root["cmt_chan_width"] = Hoymiles.getRadioCmt()->getChannelWidth();
 
     response->setLength();
     request->send(response);
@@ -166,4 +169,4 @@ void WebApiDtuClass::onDtuAdminPost(AsyncWebServerRequest* request)
     Hoymiles.getRadioCmt()->setDtuSerial(config.Dtu.Serial);
     Hoymiles.getRadioCmt()->setInverterTargetFrequency(config.Dtu.Cmt.Frequency);
     Hoymiles.setPollInterval(config.Dtu.PollInterval);
-}
\ No newline at end of file
+}
diff --git a/webapp/src/types/DtuConfig.ts b/webapp/src/types/DtuConfig.ts
index 035478809..5ebc0afd4 100644
--- a/webapp/src/types/DtuConfig.ts
+++ b/webapp/src/types/DtuConfig.ts
@@ -6,4 +6,7 @@ export interface DtuConfig {
     cmt_enabled: boolean;
     cmt_palevel: number;
     cmt_frequency: number;
-}
\ No newline at end of file
+    cmt_min_freq: number;
+    cmt_max_freq: number;
+    cmt_chan_width: number;
+}
diff --git a/webapp/src/views/DtuAdminView.vue b/webapp/src/views/DtuAdminView.vue
index ffce8e382..b98c2ccca 100644
--- a/webapp/src/views/DtuAdminView.vue
+++ b/webapp/src/views/DtuAdminView.vue
@@ -56,7 +56,7 @@
                         <div class="input-group mb-3">
                             <input type="range" class="form-control form-range"
                                 v-model="dtuConfigList.cmt_frequency"
-                                min="860250000" max="923500000" step="250000"
+                                :min="dtuConfigList.cmt_min_freq" :max="dtuConfigList.cmt_max_freq" :step="dtuConfigList.cmt_chan_width"
                                 id="cmtFrequency" aria-describedby="basic-addon2"
                                 style="height: unset;" />
                             <span class="input-group-text" id="basic-addon2">{{ cmtFrequencyText }}</span>