Note: Preference types are in bold print order number.
| description | colour | order number (with battery case 2 x 9V or 4 Mignon AA) |
| Front 1,1 mm recess, closed, narrow side below with breach for connector cable |
light gray | 0230106031/SIL |
| Front 1,1 mm recess, with window, narrow side below with breach for connector cable |
light gray | 0230106033/SIL |