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Kramer 10151232 SL-1N Master Room Controller — main product image
Kramer 10151232 SL-1N Master Room Controller
Kramer 10151232 SL-1N Master Room Controller
Kramer 10151232 SL-1N Master Room Controller
Kramer

Kramer 10151232 SL-1N Master Room Controller

The Kramer SL-1N puts full LAN-based room control — RS-232, IR, relay, and K-NET — into a palm-sized controller that configures without writing a line of code.

$276.00*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Kramer SL-1N is a compact master room controller designed for the control infrastructure of corporate conference rooms, boardrooms, and multi-use presentation spaces. Its defining capability is consolidating four distinct control signal types — bidirectional RS-232 serial, IR emitter, contact-closure relay, and Ethernet IP — into a single device that measures under three inches wide. In practical terms, this means a single SL-1N can command a display via RS-232, trigger a motorized screen via relay, control a Blu-ray player via IR, and communicate with IP-enabled switching hardware simultaneously, without requiring separate interface boxes for each signal type. The unit supports up to 15 simultaneous IP control clients, making it suitable for environments where multiple touch panels, software controllers, or building management systems need concurrent access.

The SL-1N is aimed at commercial AV integrators working on small-to-medium room deployments where programming complexity needs to remain manageable and budget doesn't justify enterprise control processors. Kramer's K-Config graphical configuration software handles room logic mapping without scripting, and Site-CTRL enables remote firmware updates and configuration management over IP after installation — reducing truck roll requirements for routine changes. The K-NET connector extends control reach to auxiliary Kramer controllers in adjacent spaces without adding IP infrastructure. The trade-off is ecosystem commitment: K-NET is proprietary, and scaling beyond what the SL-1N's two RS-232 ports and three relay ports can handle requires additional Kramer hardware rather than third-party alternatives.

Specifications

Brand
Kramer
Model
SL-1N (10151232)
Ethernet Ports
1
K-NET Connectors
1
RS-232 Ports
2 (Bidirectional)
IR Emitter Ports
2
Relay Control Ports
3
Max IP Control Clients
15 Simultaneous
Firmware Update Port
Mini USB
Configuration Software
Kramer K-Config
Remote Management
Kramer Site-CTRL
Dimensions
2.81 x 4.72 x 0.96 inches
Weight
7 ounces

Pros & Cons

👍 Pros

  • Single unit covers RS-232, IR, relay, and IP control paths simultaneously — eliminating the need for separate signal converters or interface boxes in a standard boardroom install.
  • K-Config graphical programming environment allows complete room control logic to be built and modified without scripting or command-line work.
  • K-NET bus enables multi-room expansion to auxiliary controllers without consuming additional IP addresses or network switch ports.
  • Onboard IR learning eliminates dependency on manufacturer code databases for legacy equipment control.
  • Mini USB firmware update port allows field upgrades without removing the unit from its installed location.

👎 Cons

  • K-NET expansion is proprietary — it only works with Kramer-compatible auxiliary controllers, locking you into the Kramer ecosystem for any multi-room expansion.
  • Only two RS-232 ports limits the unit to installations with modest serial device counts; larger systems require additional controllers or serial expanders.
  • At 7 ounces and 2.81 x 4.72 inches, the compact form factor means it is typically rack-shelf or surface-mounted rather than rack-mounted in a standard 1U bay without additional hardware.
  • Three relay ports may be insufficient for installations with multiple motorized elements (screens, shades, and lift mechanisms simultaneously).
  • Site-CTRL remote management requires network access to the controller — installations behind firewalls or on isolated AV VLANs need routing consideration.

Frequently Asked Questions

The SL-1N controls devices through four distinct signal paths: two bidirectional RS-232 ports for serial-controlled equipment (displays, switchers, matrix routers), two IR emitter ports for consumer AV gear, three relay ports for contact-closure devices like motorized screens and blackout shades, and one Ethernet port for IP-controllable devices and gateways. A single unit covers the full signal mix typical of a corporate or boardroom AV installation.
It supports up to 15 simultaneous IP control clients. In practice, this means 15 separate software clients, control panels, or third-party systems can query or command the SL-1N at the same time over the network without connection queuing.
Configuration is done through Kramer's K-Config software, which uses a graphical interface to map control logic without requiring custom scripting. Remote management after deployment is handled through Kramer Site-CTRL over IP, which allows firmware updates and configuration changes without physical access to the unit.
The K-NET connector allows the SL-1N to communicate with auxiliary Kramer room controllers, effectively extending the control surface to secondary rooms or additional control points without adding another IP device to the network. It's a proprietary bus, so expansion is limited to compatible Kramer K-NET hardware.
Yes. It has an onboard IR sensor and dedicated IR input port for capturing commands from existing IR remotes. This allows you to clone control of equipment without sourcing manufacturer IR code libraries — useful for legacy gear with limited documentation.

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