diff --git a/backend/src/routes/environment.routes.ts b/backend/src/routes/environment.routes.ts
index b7c8e8e..28a5519 100644
--- a/backend/src/routes/environment.routes.ts
+++ b/backend/src/routes/environment.routes.ts
@@ -521,9 +521,27 @@ export async function environmentRoutes(fastify: FastifyInstance) {
                     fastify.log.warn(`Edge device ${data.edgeId} status: ${data.status}`);
                 }
 
+                // Check for unaddressed critical temperature alerts (> 15 mins)
+                const fifteenMinsAgo = new Date(Date.now() - 15 * 60 * 1000);
+                const criticalAlert = await prisma.environmentAlert.findFirst({
+                    where: {
+                        type: 'TEMPERATURE_HIGH',
+                        resolvedAt: null,
+                        acknowledgedAt: null,
+                        createdAt: { lt: fifteenMinsAgo }
+                    }
+                });
+
+                const commands: any[] = [];
+                if (criticalAlert) {
+                    fastify.log.warn(`🚨 Failsafe triggered for alert ${criticalAlert.id}! Sending Kasa ON command to edge.`);
+                    commands.push({ type: 'toggle_plug', state: true });
+                }
+
                 return {
                     ack: true,
-                    serverTime: new Date().toISOString()
+                    serverTime: new Date().toISOString(),
+                    commands
                 };
             } catch (error) {
                 fastify.log.error(error);