diff --git a/lambda/nrplusGatewayScan.ts b/lambda/nrplusGatewayScan.ts
index 14e3c33..af5a980 100644
--- a/lambda/nrplusGatewayScan.ts
+++ b/lambda/nrplusGatewayScan.ts
@@ -26,7 +26,7 @@ export const handler = async (): Promise<void> => {
 			return iotData.send(
 				new PublishCommand({
 					topic,
-					payload: Buffer.from(payload, 'hex'),
+					payload: Buffer.from(payload, 'utf-8'),
 					qos: 1,
 				}),
 			)
diff --git a/lambda/onMessage.ts b/lambda/onMessage.ts
index e1393ae..16128fc 100644
--- a/lambda/onMessage.ts
+++ b/lambda/onMessage.ts
@@ -105,7 +105,7 @@ export const handler = async (
 		await iotData.send(
 			new PublishCommand({
 				topic: `${deviceId}/nrplus-ctrl`,
-				payload: Buffer.from(nrplusCtrl, 'hex'),
+				payload: Buffer.from(nrplusCtrl, 'utf-8'),
 				qos: 1,
 			}),
 		)