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.
SP1000 Series
S3450 Series
SK140 Series
S3305 Series
S3306 / SE3306C Series
S3325 / S3350 Series
SC410 Series