diff --git a/html/saraR4.html b/html/saraR4.html
index e8b42bd..df0009e 100755
--- a/html/saraR4.html
+++ b/html/saraR4.html
@@ -419,6 +419,14 @@
                     </div>
                     <span id="test_network_status" class="badge bg-secondary">Pending</span>
                   </div>
+
+                  <!-- Separator for sensor tests -->
+                  <div id="sensor_tests_separator" class="list-group-item bg-light text-center py-1" style="display:none;">
+                    <small class="text-muted fw-bold">SENSOR TESTS</small>
+                  </div>
+
+                  <!-- Dynamic sensor test entries will be added here -->
+                  <div id="sensor_tests_container"></div>
                 </div>
 
                 <!-- Logs section -->
@@ -1603,6 +1611,10 @@ function resetSelfTestUI() {
   document.getElementById('test_network_status').textContent = 'Pending';
   document.getElementById('test_network_detail').textContent = 'Waiting...';
 
+  // Reset sensor tests
+  document.getElementById('sensor_tests_separator').style.display = 'none';
+  document.getElementById('sensor_tests_container').innerHTML = '';
+
   // Reset logs
   document.getElementById('selftest_logs').innerHTML = '';
 
@@ -1725,6 +1737,7 @@ async function selfTestSequence() {
       selfTestReport.modemVersion = configResponse.modem_version || 'Unknown';
       selfTestReport.latitude = configResponse.latitude_raw || 'N/A';
       selfTestReport.longitude = configResponse.longitude_raw || 'N/A';
+      selfTestReport.config = configResponse;
 
       // Get RTC time
       try {
@@ -2011,6 +2024,186 @@ async function selfTestSequence() {
       testsFailed++;
     }
 
+    // ═══════════════════════════════════════════════════════
+    // SENSOR TESTS - Test enabled sensors based on config
+    // ═══════════════════════════════════════════════════════
+    const config = selfTestReport.config || {};
+    const sensorTests = [];
+
+    // NPM is always present
+    sensorTests.push({ id: 'npm', name: 'NextPM (Particles)', type: 'npm', port: 'ttyAMA5' });
+
+    // BME280 if enabled
+    if (config.BME280) {
+      sensorTests.push({ id: 'bme280', name: 'BME280 (Temp/Hum)', type: 'BME280' });
+    }
+
+    // Noise if enabled
+    if (config.NOISE) {
+      sensorTests.push({ id: 'noise', name: 'Noise Sensor', type: 'noise' });
+    }
+
+    // Envea if enabled
+    if (config.envea) {
+      sensorTests.push({ id: 'envea', name: 'Envea (Gas Sensors)', type: 'envea' });
+    }
+
+    // Create sensor test UI entries dynamically
+    if (sensorTests.length > 0) {
+      document.getElementById('sensor_tests_separator').style.display = '';
+      const sensorContainer = document.getElementById('sensor_tests_container');
+      sensorContainer.innerHTML = '';
+
+      sensorTests.forEach(sensor => {
+        sensorContainer.innerHTML += `
+          <div class="list-group-item d-flex justify-content-between align-items-center" id="test_${sensor.id}">
+            <div>
+              <strong>${sensor.name}</strong>
+              <div class="small text-muted" id="test_${sensor.id}_detail">Waiting...</div>
+            </div>
+            <span id="test_${sensor.id}_status" class="badge bg-secondary">Pending</span>
+          </div>`;
+      });
+    }
+
+    addSelfTestLog('');
+    addSelfTestLog('────────────────────────────────────────────────────────');
+    addSelfTestLog('SENSOR TESTS');
+    addSelfTestLog('────────────────────────────────────────────────────────');
+
+    // Run each sensor test
+    for (const sensor of sensorTests) {
+      await delay(500);
+
+      document.getElementById('selftest_status').innerHTML = `
+        <div class="d-flex align-items-center text-primary">
+          <div class="spinner-border spinner-border-sm me-2" role="status"></div>
+          <span>Testing ${sensor.name}...</span>
+        </div>`;
+
+      updateTestStatus(sensor.id, 'Testing...', 'Reading sensor data...', 'bg-info');
+      addSelfTestLog(`Testing ${sensor.name}...`);
+
+      try {
+        if (sensor.type === 'npm') {
+          // NPM sensor test
+          const npmResult = await new Promise((resolve, reject) => {
+            $.ajax({
+              url: 'launcher.php?type=npm&port=' + sensor.port,
+              dataType: 'json',
+              method: 'GET',
+              timeout: 15000,
+              success: function(data) { resolve(data); },
+              error: function(xhr, status, error) { reject(new Error(error || status)); }
+            });
+          });
+
+          selfTestReport.rawResponses['NPM Sensor'] = JSON.stringify(npmResult, null, 2);
+          addSelfTestLog(`NPM response: PM1=${npmResult.PM1}, PM2.5=${npmResult.PM25}, PM10=${npmResult.PM10}`);
+
+          // Check for errors
+          const npmErrors = ['notReady', 'fanError', 'laserError', 'heatError', 't_rhError', 'memoryError', 'degradedState'];
+          const activeErrors = npmErrors.filter(e => npmResult[e] === 1);
+
+          if (activeErrors.length > 0) {
+            updateTestStatus(sensor.id, 'Warning', `Errors: ${activeErrors.join(', ')}`, 'bg-warning');
+            testsFailed++;
+          } else if (npmResult.PM1 !== undefined && npmResult.PM25 !== undefined && npmResult.PM10 !== undefined) {
+            updateTestStatus(sensor.id, 'Passed', `PM1: ${npmResult.PM1} | PM2.5: ${npmResult.PM25} | PM10: ${npmResult.PM10} ug/m3`, 'bg-success');
+            testsPassed++;
+          } else {
+            updateTestStatus(sensor.id, 'Warning', 'Incomplete data received', 'bg-warning');
+            testsFailed++;
+          }
+
+        } else if (sensor.type === 'BME280') {
+          // BME280 sensor test
+          const bme280Result = await new Promise((resolve, reject) => {
+            $.ajax({
+              url: 'launcher.php?type=BME280',
+              dataType: 'text',
+              method: 'GET',
+              timeout: 15000,
+              success: function(data) { resolve(data); },
+              error: function(xhr, status, error) { reject(new Error(error || status)); }
+            });
+          });
+
+          const bmeData = JSON.parse(bme280Result);
+          selfTestReport.rawResponses['BME280 Sensor'] = JSON.stringify(bmeData, null, 2);
+          addSelfTestLog(`BME280 response: temp=${bmeData.temp}, hum=${bmeData.hum}, press=${bmeData.press}`);
+
+          if (bmeData.temp !== undefined && bmeData.hum !== undefined && bmeData.press !== undefined) {
+            updateTestStatus(sensor.id, 'Passed', `${bmeData.temp}°C | ${bmeData.hum}% | ${bmeData.press} hPa`, 'bg-success');
+            testsPassed++;
+          } else {
+            updateTestStatus(sensor.id, 'Warning', 'Incomplete data received', 'bg-warning');
+            testsFailed++;
+          }
+
+        } else if (sensor.type === 'noise') {
+          // Noise sensor test
+          const noiseResult = await new Promise((resolve, reject) => {
+            $.ajax({
+              url: 'launcher.php?type=noise',
+              dataType: 'text',
+              method: 'GET',
+              timeout: 15000,
+              success: function(data) { resolve(data); },
+              error: function(xhr, status, error) { reject(new Error(error || status)); }
+            });
+          });
+
+          selfTestReport.rawResponses['Noise Sensor'] = noiseResult;
+          addSelfTestLog(`Noise response: ${noiseResult.trim()}`);
+
+          const noiseValue = parseFloat(noiseResult.trim());
+          if (!isNaN(noiseValue) && noiseValue > 0) {
+            updateTestStatus(sensor.id, 'Passed', `${noiseValue} dB`, 'bg-success');
+            testsPassed++;
+          } else if (noiseResult.trim() !== '') {
+            updateTestStatus(sensor.id, 'Warning', `Unexpected value: ${noiseResult.trim()}`, 'bg-warning');
+            testsFailed++;
+          } else {
+            updateTestStatus(sensor.id, 'Failed', 'No data received', 'bg-danger');
+            testsFailed++;
+          }
+
+        } else if (sensor.type === 'envea') {
+          // Envea sensor test - use the debug endpoint for all sensors
+          const enveaResult = await new Promise((resolve, reject) => {
+            $.ajax({
+              url: 'launcher.php?type=envea_debug',
+              dataType: 'text',
+              method: 'GET',
+              timeout: 30000,
+              success: function(data) { resolve(data); },
+              error: function(xhr, status, error) { reject(new Error(error || status)); }
+            });
+          });
+
+          selfTestReport.rawResponses['Envea Sensors'] = enveaResult;
+          addSelfTestLog(`Envea response: ${enveaResult.trim().substring(0, 200)}`);
+
+          if (enveaResult.trim() !== '' && !enveaResult.toLowerCase().includes('error')) {
+            updateTestStatus(sensor.id, 'Passed', 'Sensors responding', 'bg-success');
+            testsPassed++;
+          } else if (enveaResult.toLowerCase().includes('error')) {
+            updateTestStatus(sensor.id, 'Failed', 'Sensor error detected', 'bg-danger');
+            testsFailed++;
+          } else {
+            updateTestStatus(sensor.id, 'Failed', 'No data received', 'bg-danger');
+            testsFailed++;
+          }
+        }
+      } catch (error) {
+        addSelfTestLog(`${sensor.name} test error: ${error.message}`);
+        updateTestStatus(sensor.id, 'Failed', error.message, 'bg-danger');
+        selfTestReport.rawResponses[`${sensor.name}`] = `ERROR: ${error.message}`;
+        testsFailed++;
+      }
+    }
+
   } catch (error) {
     addSelfTestLog(`Test sequence error: ${error.message}`);
   } finally {
@@ -2101,7 +2294,11 @@ GPS Location:   ${selfTestReport.latitude || 'N/A'}, ${selfTestReport.longitude
     modem: 'Modem Connection',
     sim: 'SIM Card',
     signal: 'Signal Strength',
-    network: 'Network Connection'
+    network: 'Network Connection',
+    npm: 'NextPM (Particles)',
+    bme280: 'BME280 (Temp/Hum)',
+    noise: 'Noise Sensor',
+    envea: 'Envea (Gas Sensors)'
   };
 
   for (const [testId, name] of Object.entries(testNames)) {