Siemens’ Corporate History
https://www.powermag.com/the-big-picture-siemens-corporate-history/
Reconnaissance and inspection complex "Sphere"
Characteristics:
Surveillance range with transmission of video information via radio channel to the remote control, m - not less than 50
The range of operating frequencies of the transmission channel in the version 1110/1150, MHz - 1110–1150
The operating frequency range of the transmission channel in the version 1190/1230, MHz - 1190–1230
Camcorders - 4 x CMOS, B/W
Lenses - 4 x Bordlens 2.8
Illumination - white LED (4x6 LEDs) - by default; infrared - in - IR version
Viewing angle, hail. - 360
Power source - Li-PO battery (replaceable)
Time of continuous operation, min. - at least 60
Diameter, mm - 90
Weight, g - 640
Operating temperature range, deg. C - from -20 to +45
Humidity (at +25 degrees C),% - 98
https://vpk.name/library/f/shpera-rdk.html