It is a multiband lightning protector.
The protector can also be installed upside down.
Complies with IEC 61643-21
Impedance: 50 Ω
Frequency ranges:
806 - 2500 MHz
Return loss: ≥ 20.8 dB
Insertion loss: ≤ 0.15 dB
CW RF power: ≤ 500 W
806 - 960 MHz
Return loss: ≥ 26 dB
Insertion loss: ≤ 0.15 dB
CW RF power: ≤ 1000 W
1710 - 2500 MHz
•• Return loss: ≥ 26 dB
Insertion loss: ≤ 0.15 dB
CW RF power: ≤ 500 W
Overcurrent handling capacity: 50 multiple kA (8/20 µs)
Mounting with M8 screw