Kipp&Zonen SOLYS 2 Sun Tracker - Manual (Page 27)

4.3 SIDE MOUNTING PLATE + MIDDLETON SPO2 SUN PHOTOMETER
Figure 4.21
Installation of Middleton SPO2 sun photometer adapter on side
mounting plate
Important: The SOLYS2 has only one side mounting plate present as default.
When ordering a SPO2 mounting kit, please check if you need an additional side mounting plate!