The FSII-BASE-II is an innovative base station designed for the wireless FreeSpeak II system, operating on both 1.9 GHz and 2.4 GHz frequencies. It facilitates seamless communication by supporting up to 25 FreeSpeak II beltpacks and 10 transceivers, making it ideal for large-scale events. The unit's four 2-wire ports with auto nulling and four 4-wire audio connections ensure versatile connectivity options for diverse event requirements. Additionally, the FSII-BASE-II's multi-mode user interface, complete with OLED displays and soft keys, offers intuitive operation and easy monitoring, making it a user-friendly choice for event organizers and planners.

• Frequency Response (Base-to-Beltpack): 100Hz - 7.1kHz
• Beltpacks Supported per Base Station: 25
• Transceiver/Antennas Supported by Base: 10
• Active Transceiver Ports: 2 (one port can power up to 1 FSII splitter or transceiver)
• PC Programming Port: 2 LAN RJ45
• Relay Port: DB15 (supports one relay assigned to SA out)
• Partyline Ports: XLR-3F, on/off termination switch (Clear-Com and RTS compatible)
• Partyline Power: On/Off for A/B, C/D paired
• 4-Wire/Matrix Connection: 4 RJ45
• Program Input: XLR-3F, transformer isolated, line-level
• Stage Announce Output: XLR-3M, transformer isolated, line-level
• Front Panel Headset: 4-pin male and 5-pin female options
• Front Panel Displays: 4 OLEDs with encoders and assignable soft keys
• Front Panel Indicators: Antenna Status, Beltpack Status
• External Power Supply Connection: 12V DC Base Station
• Power Input: 100-240V AC, 1.4A max
• Power Output: 12V DC, 60W
• Current Draw: 12V, 4A max, 48W max

See here.