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internal/devices/powergenius/powergenius.go

@@ -164,6 +164,12 @@ func (c *Client) pollLoop() {
 			// Mark as connected
 			status.Connected = true
 
+			// Check if device is actually alive (not just TCP connected)
+			// If voltage is 0 and temperature is 0, device is probably off
+			if status.Voltage == 0 && status.Temperature == 0 {
+				status.Connected = false
+			}
+
 			// Peak hold logic - keep highest power for 1 second
 			now := time.Now()
 			if c.lastStatus != nil {