Leased Line Modems
RayTel Telenetics MIU202T Industrial Grade Bell 202T Private Wire Modem

This Industrial Modem Industrial/Interface Unit (MIU) is a 3rd Generation Bell 202T (or V.23) Leased Line, Private Line or Private Wire Modem supporting rates up to 1200bps. AC/DC Powered.

• Reliable - For SCADA applications, these Bell 202T modems deliver reliable, low-speed data communication over leased lines.
• Any Wire - Works on indoor and outdoor copper lines that do not meet conventional specifications.
• Made for RTU Connectivity - Perfect for RTUs, Metering or SCADA data communication to central control centers in power generation, oil and gas, and water treatment plants, reliant on legacy infrastructure.
• Rugged Design - With operating temperatures of -40°C to +85°C and IEC801-4 Surge Protection, these Industrial-grade modems are built to withstand harsh environmental conditions commonly found in industrial settings.
• Leased Or Private Lines - Specifically designed to operate over unconditioned copper wire, these units offer Full Duplex Over 4-Wire Leased or Private Lines, Half Duplex Over 2-Wire Leased or Private Lines.
• Single Circuit Data Collection - Point-to-Point and Multipoint communication, allowing for data collection from multiple remote sites on a single circuit.
• Low-Rate Telemetry - These modems are suitable for applications for transmitting low rate sensor readings and control commands.
• AC or DC Power - Supports a wide range of powering options -48 to 220V AC/DC Power (-9 to -36VDC Optional) Power Supply.

The MIU202T is a Bell Standard 202T modem designed for asynchronous operation at 0 to 1200bps over voice grade leased lines or pilot wires. If required, a V.23 (1200bps) model is also available by special order (MIU23).

As a 3^rd generation solution, the baseboard (Interface card) has been upgraded to SMD technology along with several circuit isolation design improvements to reducing the susceptibility of the product to externally generated damages, i.e. power fluctuations, surges on the power interface.

The modem is intended for use on leased lines and private lines providing half duplex communications on 2-wire lines, or full duplex communications on 4-wire lines.  Bell 202T remains the standard of choice in many utility and industrial applications where relatively small amounts of data are to be transmitted in multi-point networks.

The MIU202T can be powered from any AC or DC voltage in the range -48V to 220V. A -9 to -36VDC version is also available.

The unit is designed to work in extended temperatures ranging from -40°C to +85°C, and is surge protected on both the power and analog lines up to 8kV, double the voltage requirements of IEC801-4 standard.

All of this is bundled in a miniature 5-3/8” x 4” x 1-3/8”, suitable for desktop or wall mounting.  The aluminum enclosure features wall mounting flanges and the ability to add a DIN Rail clip to simplify installations.