Product Overview
NITEK DL2105 RS232 Serial Data Extender Bundle – Unused, New Old Stock
This listing is for a complete NITEK DL2105 RS232 serial data extender set, including the transmitter, receiver, and two 14 VDC power supplies. Designed for long-distance point-to-point RS232 links, the DL2105 moves standard serial communication over unshielded twisted-pair wiring such as Category cable or 24 AWG telecom pairs.
NITEK built these extenders for environments where RS232 must traverse floors, buildings, or utility corridors without protocol conversion or signal rewriting. The DL2105 maintains RS232 voltage levels, handshaking lines, and transparent data behavior across distances far beyond the limits of standard serial cabling.
Product Condition
Unused, new old stock. Clean and in excellent condition with only minor signs of handling from storage.
Product Overview
The DL2105 operates as a full-duplex serial extender using multiple twisted pairs: two pairs for transmit and two for receive. Under ideal conditions, it supports up to 12,000 feet at lower baud rates such as 9600 bps, with shorter maximum runs at higher rates up to 115.2 kbps. This makes the unit practical for SCADA, PLC consoles, security controllers, serial printers, and facility telemetry where RS232 ports need extended reach.
Because it regenerates signals rather than converting protocols, connected devices see a transparent RS232 link—handshaking, timing, parity, and framing behave exactly as they would on a short local cable. The unit operates within typical ambient ranges (around 0–50 °C), and performance depends on cable quality, twist consistency, and the electromagnetic environment.
Key Features
- RS232 serial extender for point-to-point communication
- Full-duplex operation using dedicated transmit and receive twisted pairs
- Supports long-distance links up to approximately 12,000 ft at lower baud rates
- Transparent RS232 behavior with preserved voltage levels and handshaking
- Compatible with Cat5e/6 or 24 AWG telecom pairs
- Operational speeds from low baud rates up to 115.2 kbps
- Two included 14 VDC power supplies for transmitter and receiver
- Compact modules suitable for control panels or equipment racks
- Ideal for PLCs, SCADA nodes, access-control boards, and remote serial peripherals
Applications
- Extending console access to PLCs or controllers across large facilities
- Running RS232 telemetry to remote equipment rooms or building wings
- Linking serial printers or HMIs where cable distance exceeds RS232 limits
- Security and CCTV telemetry for PTZ or control signaling
- Industrial automation tasks requiring long-distance serial communication
- Bringing legacy RS232 equipment into modern structured-cabling layouts
Frequently Asked Questions
What cable type is recommended for the DL2105?
Unshielded twisted pair such as Cat5e/6 or 24 AWG telecom pairs. Higher-quality cable improves maximum distance and noise immunity.
Does the DL2105 convert RS232 to RS422/485?
No. It is a transparent RS232 extender only. Devices on each end still communicate using standard RS232 electrical levels and signaling.
What baud rate can I expect over long distances?
Up to 12,000 ft is achievable at lower rates like 9600 bps. Higher speeds reduce maximum distance and depend heavily on cable and EMI conditions.
Can this bundle power both modules?
Yes. Two 14 VDC power supplies are included—one for the transmitter and one for the receiver.
Is protocol timing affected by the extender?
The DL2105 regenerates signals transparently. Handshaking and framing behave as they would over a short RS232 cable, subject to distance-related limits.
NITEK designed the DL2105 for the long corridors and service chases of real industrial sites—places where serial links still matter and reliability wins. This set is ready for its next deployment in your control architecture.
