- For LD Systems E508 systems - Characteristic: Cardioid - Frequency range: 60 - 16,000 Hz - Switchable transmission power 2, 10 and 30 mW - OLED display - Pilot tone - Operation with 2 x 1.5V AA batteries or rechargeable batteries - Transmission frequency range: 823 - 832 MHz and 863 - 865 MHz - Dimensions: 257 x 50 mm EUR 188.00 - See more - Buy online