1. Check the bottom of the box, you should see the model number near the bar code.
2. Check the back or bottom of the main unit, it should have a rating label that shows your model number.
3. Check your manual. Your product’s model number is listed on the front cover of your instruction booklet.
PX250 Series
EX300 Series
EX120 Series
EX150 / EX200 Series
PX200 Series