ARRI ERM-900 Ext. Radio Module 900 MHz RXD-TXD, SRH Basic Set KK.0040050

External Radio Modules 900 and 2400 for Stabilized Remote Head SRH-3 allow for increased range and reliability in wireless communication at a greater distance.

Range: Up to 3000 meter / 6560 ft

Comes With 

• 2 x ERM  900 MGz External Radio Modules
• 2 x SRH-3 FS CAN Bus Cable, 1m/3.2ft
• 1 x ERM Power Cable, ERM-2400 & ERM-900
• The range of up to 3000 meter / 6560 ft is based on so-called channel hopping.