2 files changed, 6 insertions, 1 deletions
diff --git a/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java b/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java
index 7e520ab3a..978d768be 100644
--- a/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java
@@ -397,7 +397,7 @@ public class SuntechProtocolDecoder extends BaseProtocolDecoder {
 
             if (isIncludeAdc(deviceSession.getDeviceId())) {
                 for (int i = 1; i <= 3; i++) {
-                    if (!values[index++].isEmpty()) {
+                    if (index < values.length && !values[index++].isEmpty()) {
                         position.set(Position.PREFIX_ADC + i, Double.parseDouble(values[index - 1]));
                     }
                 }
diff --git a/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java
index 82f0a29e1..692a13131 100644
--- a/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java
@@ -13,6 +13,11 @@ public class SuntechProtocolDecoderTest extends ProtocolTest {
 
         decoder.setHbm(true);
         decoder.setIncludeAdc(true);
+
+        verifyAttribute(decoder, buffer(
+                "ST600STT;008594432;20;492;20200212;18:58:30;060bb0e1;334;20;36bb;45;+19.337897;-099.064489;000.398;000.00;12;1;5049883;13.61;100100;2;1198;013762;4.2;1;4.68"),
+                Position.PREFIX_ADC + 1, 4.68);
+
         decoder.setIncludeTemp(true);
 
         verifyAttribute(decoder, buffer(