Kramer EXT3-U-KIT USB 2.0 PoC Extender Up to 330 Feet with Audio RS-232 Support
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In the box
In the box
Free standard shipping
Free standard shipping
*Orders placed before 1 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy
Free Local Pickup
Free Local Pickup
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Extend USB 2.0, RS-232, and audio signals up to 330 feet with the Kramer EXT3-U-KIT. Designed for meeting rooms, classrooms, and corporate environments, this all-in-one kit includes a transmitter and receiver that convert USB and audio signals over a single Cat 6a cable for seamless connectivity and power. Connect up to four USB peripherals: keyboards, mice, headphones, or smartphones, and enjoy smooth, plug-and-play performance without complicated setup.
USB 2.0 and Audio Extension:
Transmit USB and stereo audio signals up to 330 feet over Cat 6a or 98 feet over Cat 5e.
Wide Device Compatibility:
Supports cameras, touchscreens, smartboards, hard drives, game controllers, printers, scanners, mice, keyboards, smartphones, and tablets.
Remote USB Charging:
Charge connected devices via USB fast charge when using the included power supply, or standard USB charging via the transmitter.
Bidirectional RS-232 Support:
Enables two-way serial communication for data transmission and device control.
Plug-and-Play Installation:
Compact, fanless design mounts easily, with a single twisted pair cable for both power and signal. Onboard LED indicators simplify troubleshooting and maintenance.
Main
| Configuration | Core |
| Connector | USB-A |
| Material | Aluminum |
| Color | Black |
- Receiver: 1x RJ45 Female Input, 1x 3.5mm Audio Female Output, 4x USB-A Female, 1x RS-232 Block Female
- Transmitter: 1x 3.5mm Audio Female Input, 1x RJ45 Female Output, 1x USB-B Female, 1x RS-232 Block Female
- Transmitter: 2.4 inches x 2.0 inches x 0.9 inches / 6.2 x 5.2 x 2.4 cm
- Receiver: 2.4 inches x 2.0 inches x 0.9 inches / 6.2 x 5.2 x 2.4 cm
- Package Weight: 1.5 lb
- Box Dimensions (LxWxH): 6.2 inches x 3.6 inches x 1.5 inches
Kramer EXT3-U-KIT USB 2.0 PoC Extender Up to 330 Feet with Audio RS-232 Support
| Inputs/Outputs | |
| Maximum Transmission Distance | 98.4 feet / 30 meters |
| Transmission Method | CAT5e Cable |
| Input Power | 12 VDC, 2 A |
| Operating Conditions | 32 to 104°F / 0 to 40°C at 10 to 90% Humidity |
| Storage Conditions | -40 to 158°F / -40 to 70°C |
| Certifications | CE, RoHS, UKCA, UL, WEEE |
| Material of Construction | Aluminum |
| Cable Length | 6.6 feet / 2 meters |
| Dimensions | |
| Weight | 8.0 oz / 227 g |
| Packaging Info |
Frequently Asked Questions
How do I return an item?
How do I return an item?
Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.
Will I receive a full refund when I return an item?
Will I receive a full refund when I return an item?
You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges.
How many days do I have to make a return?
How many days do I have to make a return?
You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days.
My item was damaged in transit. How do I place a return?
My item was damaged in transit. How do I place a return?
If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact support@focuscamera.com with your order number and a description of the damage.
There’s an issue with my order, what should I do?
There’s an issue with my order, what should I do?
Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at support@focuscamera.com, or send us a message here.
Can I exchange an item?
Can I exchange an item?
We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead.
If I ordered a kit, do I have to return all the items?
If I ordered a kit, do I have to return all the items?
If you ordered a kit, you must return all components and accessories to receive a full refund.
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund.
Do you offer repairs?
Do you offer repairs?
We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900.
What is your return policy?
What is your return policy?
Most items can be returned within 30 days for a full refund. Click here to read our full return policy.

