diff --git a/src/pbHelpers/ComponentTypes/DragerGasDongle.ts b/src/pbHelpers/ComponentTypes/DragerGasDongle.ts
index cb2b3c6..a8f2090 100644
--- a/src/pbHelpers/ComponentTypes/DragerGasDongle.ts
+++ b/src/pbHelpers/ComponentTypes/DragerGasDongle.ts
@@ -167,7 +167,8 @@ export function dragerGasDongle(subtype: number = 0): ComponentTypeExtension {
         lines: [],
         average: []
       };
-      if (subtype === quack.DragerGasDongleSubtype.DRAGER_GAS_DONGLE_SUBTYPE_O2) {
+      //sets the value as a percent for the chart data
+      if (subtype === quack.DragerGasDongleSubtype.DRAGER_GAS_DONGLE_SUBTYPE_O2 || subtype === quack.DragerGasDongleSubtype.DRAGER_GAS_DONGLE_SUBTYPE_LEL) {
         let firstTime: Moment | undefined;
         let lastTime: Moment | undefined;
         let valMap: Map<number, number[]> = new Map<number, number[]>();
diff --git a/src/pbHelpers/MeasurementDescriber.ts b/src/pbHelpers/MeasurementDescriber.ts
index ee45c8f..a364b77 100644
--- a/src/pbHelpers/MeasurementDescriber.ts
+++ b/src/pbHelpers/MeasurementDescriber.ts
@@ -334,6 +334,7 @@ export class MeasurementDescriber {
                 this.details.unit = "mV";
                 break;
               case quack.DragerGasDongleSubtype.DRAGER_GAS_DONGLE_SUBTYPE_O2:
+              case quack.DragerGasDongleSubtype.DRAGER_GAS_DONGLE_SUBTYPE_LEL:
                 this.details.colour = blue["400"];
                 this.details.decimals = 1;
                 this.details.unit = "%";
@@ -342,7 +343,7 @@ export class MeasurementDescriber {
                   mode: "toStored" | "toDisplay"
                 ): number => {
                   if (mode === "toStored") {
-                    //for O2 dragers the display is in percentage so convert the percent to ppm
+                    //for O2/LEL dragers the display is in percentage so convert the percent to ppm
                     return value * 10000;
                   }
                   return value / 10000;