Johnson Controls 4683-TTM-3F N2 Bus Repeater 24VAC RS-485 Network Signal Booster

The Johnson Controls 4683-TTM-3F is an N2 Bus Repeater designed to extend the range and reliability of building automation networks. This network repeater isolates and boosts RS-485 communication signals, allowing data transmission to travel up to an additional 4,000 feet while maintaining signal integrity.

Key Features:

• Supports up to 32 RS-485 devices per repeater installation
• Switch-selectable baud rates: 600, 1200, 2400, 4800, 9600, 19.2K, 38.4K, and 76.8K
• Field-selectable end-of-line network terminations on both A and B sides
• Status LEDs indicate transmission direction, RS-485 bus fault conditions, and power status
• Built-in electrical transient protection shields equipment from voltage spikes and noise
• Half-duplex operation with transparent device communication
• Operating temperature range: -25°C to 70°C (-13°F to 158°F)
• Wire compatibility: 14 to 26 AWG

This repeater operates on 24VAC power and is compatible with Johnson Controls N2 and BACnet bus systems. The unit features a daisy-chain topology and can be mounted on any base plate, installed in a NEMA enclosure for harsh environments, or used without an enclosure in controlled indoor settings. Installation involves simple mounting, power and cable connections, and baud rate switch configuration.