Hello sir, I recently purchased HB1250 A model 0:43 from my nerby amaron distributer. I noticed some wierd issues on this inverter. It doesn't beep when light is gone or come. Also in UPS or Narrow range mode. My bulb is having a delay around 1 second. But in wide range, it works very good didn't get any delays. Please read my issues and give me some information about this issue.