The product serie includes 3 products. 2 of these products are discontinued from the supplier.

Specifications summarized

Specifications for the 3 products in the product series. Click a HMI-no. to see all details for a single product.

Product 1 - 3
Specification/HMI-no.	17920 discont.	20411 discont.	20412
Magnification (X)	4	7	10
Optical strength (D)	16	28	38