HDMI Extender 4K HDbaseT 120mt 4K IR Bidirectional - Loop out - RS232
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Sede Operativa Oniroview
Pickup available, usually ready in 24 hours
Via Piave 17
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95129 Catania CT
Italy
HDMI Extender 4K HDbaseT 120mt 4K IR Bidirectional - Loop out - RS232
📐 4K@60Hz up to 120 m │ HDBaseT over 1 Cat.5e/6 cable │ Bidirectional IR + RS232 — 🔧 Installation difficulty: 3/5 │ 🎯 Ideal for: projectors in conference rooms and classrooms, systems with RS232 automation, sources in racks far from the display
4K HDBaseT Extender: video, IR control and RS232 over a single network cable up to 120 metres
120 m in 4K@60Hz over a single network cable, almost double the 70 m of HDMI 2.0 extenders over Cat.6: this is the advantage of the HDBaseT technology in the CT378/11/1. Power over cable (PoC), bidirectional IR and RS232 for automation also travel over the same cable. It is the choice for installations over 70 m; within that distance, HDMI 2.0 extenders over Cat.6 are sufficient.
Who chooses it
- Conference rooms and classrooms with a 4K projector far from the source rack.
- Systems with automation that control projectors and displays via RS232.
- Installations where there is no power outlet for the extender at the remote point.
It is not the right choice if the distance exceeds 120 m, where fibre optics are required, or if you want to distribute the source to multiple screens over the LAN.
Technical analysis and advantages
- 📏 120 m in 4K@30/60Hz — over Cat.5e/6: almost double the 70 m of HDMI 2.0 extenders over non-HDBaseT network cable.
- ⚡ 18 Gbps, HDCP 2.2, 12 bit/channel — 4K at 60Hz with Deep Color and protected content, including 3D.
- 🔌 24V PoC — a single 24V 1A power supply for both units, over the network cable.
- 🔄 Bidirectional IR — IR inputs and outputs on the transmitter and receiver: control the source from the display and the display from the source.
- 🖧 RS232 on both units — serial control of projectors, displays and automation systems, with terminal blocks included.
- 🔀 HDMI loop-out and L/R audio output — local screen on the transmitter and 3.5 mm jack analog audio on the receiver.
- 🔊 Dolby TrueHD, Dolby Digital Plus, DTS:X, DTS-HD Master Audio — and LPCM up to 7.1, with CEC control bypass.
Technical specifications
| Technology | HDBaseT, point-to-point (1:1), non-configurable IP address |
| Maximum resolution | 4K @ 60Hz |
| Supported resolutions | 720p@30/50/60Hz, 1080i and 1080p@24/25/30/50/60Hz, 4K DCI and UHD@24/25/30/50/60Hz |
| 3D compatible | Yes |
| Maximum distance | 120 m in 4K@30/60Hz (Cat.5e/6 cable) |
| Connection cable | 1x Cat.5e/6, IEEE-568B standard |
| Bandwidth | 18 Gbps |
| HDCP | 1.3, 2.2 |
| Colour space | RGB, YCbCr, Deep Color 12 bit/channel |
| Audio formats | Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS:X, DTS-HD Master Audio, LPCM 5.1/7.1 (up to 8 channels 192 kHz/24 bit), PCM 2.0 |
| CEC | Bypass |
| Control interfaces | Bidirectional IR, RS232 |
| Transmitter connections | HDMI input, HDMI loop-out, RJ45, RS232, 3.5 mm jack IR input and output |
| Receiver connections | HDMI output, RJ45, RS232, 3.5 mm jack L/R audio, 3.5 mm jack IR input and output |
| Power supply | 1x 24Vdc 1A, 5.5×2.5 mm plug, PoC |
| Power consumption | 9.36 W |
| Indicators | Status LED |
| Dimensions | 65 × 140 × 18 mm |
| Housing | Metal, black |
| Operating / storage temperature | 0/40 °C · -20/60 °C |
| Relative humidity | Max 90% |
| Mounting | 4 mounting brackets included |
| Manufacturer | AlphaNET |
| SKU | CT378/11/1 |
| EAN | 8017443672055 |
🔍 Expert Advice:
To make the most of 120 m in 4K, lay a dedicated Cat.6 solid copper cable and keep it separate from 230V power cables in conduits. HDBaseT is a point-to-point connection: the cable must run directly from the transmitter to the receiver, without switches or routers in between.
Complete your project
- 🔗 305 m Cat.6 U/UTP solid copper cable reel — the solid copper cable recommended by the manufacturer to achieve the stated distances.
- 🔗 Tool-less Cat.6A RJ45 plug — terminate the cable after installation without a crimping tool.
Frequently asked questions
What is the difference between HDBaseT and an HDMI extender over network cable?
HDBaseT is a standard that carries uncompressed video, audio, power and control commands over a single Cat.5e/6 cable over greater distances: the CT378/11/1 reaches 120 m in 4K@60Hz, compared to 70 m for HDMI 2.0 extenders over Cat.6. It also includes RS232 and bidirectional IR, useful in systems with automation.
What is the RS232 port on an HDBaseT extender used for?
It carries serial commands between the two ends of the connection. An automation system or PC next to the source can thus turn on, turn off or configure a remote projector or display that accepts RS232 commands, without laying a dedicated serial cable. The connections are made using the included terminal blocks.
Can an HDBaseT extender be connected to a network switch?
No: HDBaseT uses network cable but is not an IP transmission. The transmitter and receiver must be connected point-to-point with a single cable, without switches or routers in between. If you need to distribute a source to multiple screens over the LAN, you need an extender over IP with Gigabit IGMP switches.
Package contents
📦 1x Transmitter · 1x Receiver · 1x 24Vdc 1A power supply · 1x Receiver IR cable · 1x Transmitter IR cable · 2x RS232 terminal blocks · 4x Mounting brackets
Warranty and safety
✅ CE, RoHS. 📜 2-year legal warranty (Italian Legislative Decree 170/2021). ⚠️ Install the transmitter and receiver in an indoor environment, between 0 and 40 °C. Point-to-point connection only over a single cable, without switches or routers.
Shipping from Catania. Technical support for HDBaseT systems and video distribution.
Changed your mind? Here's what to do
If you want to return your order, we're here to help. You have the right to withdraw from the purchase within 14 days of delivery, without having to provide any reason.
Right of withdrawal (within 14 days)
The deadline is 14 days from delivery. If the order includes multiple items delivered separately, the deadline starts from the delivery of the last item.
The 14 days are calculated in calendar days, including Saturdays, Sundays, and public holidays. If the last day falls on a Saturday, Sunday, or public holiday, the deadline is extended to the next working day.
How to exercise it: Initiate the request from the dedicated function in your account: https://account.oniroview.com → Orders section → "Manage" → "Request Return". The withdrawal is validly exercised at the moment you send the online request; it is not subject to our prior authorization.
- Return: You must send the products back within 14 days from the date you notified us of the withdrawal.
- Refund: We will refund you within 14 days of the withdrawal notification. We may withhold the refund until we have received the goods or proof of their shipment, whichever occurs first.
- Full withdrawal (you return all products in the order): 100% refund of the price plus standard outbound shipping costs. If you chose a more expensive delivery than the standard one at the time of the order, any supplement is not refundable.
- Partial withdrawal (you return only some products): refund of the price of only the returned products; outbound shipping costs are not refunded. If the order benefited from free shipping due to reaching a threshold and the partial return causes the value to fall below that threshold, the corresponding shipping cost will be calculated and deducted from the refund.
- Return costs: The direct costs of return are borne by the customer.
- Diminution in value: You are only responsible for any diminution in the value of the goods resulting from handling other than what is necessary to establish their nature, characteristics, and functioning. In such a case, we will deduct from the refund an amount corresponding to the ascertained lost value.
The refund will be made using the same payment method used for the purchase.
Exclusions from the right of withdrawal
Pursuant to Article 59 of the Consumer Code, withdrawal does not apply to:
- goods made to measure or clearly personalized (e.g., cables cut to size, custom configurations);
- sealed goods that are not suitable for return for hygienic reasons or health protection, if unsealed after delivery;
- digital content supplied on a non-material medium, if the performance has begun with your prior consent and acceptance of the loss of the right of withdrawal.
Outlet Items: Items in the Outlet category are sold as final sale and are not returnable.
B2B Sales: The right of withdrawal does not apply to contracts concluded with customers holding a VAT number.
How to ship the return
Once the request has been submitted, send all items to: Oniroview, Via Piave 17, 95129 Catania (CT), Italy.
- Pack carefully and use secure, tracked shipping: products lost or damaged during return transit cannot be refunded.
- To protect the original packaging, place it in a second box when possible. Do not apply labels or adhesive tape directly to the product's original packaging.
Tax deductions and benefits for ordinary and extraordinary maintenance
To request tax breaks, send your request to the email address: amministrazione@oniroview.com
IRPEF deductions at 50%
You are entitled to a 50% deduction for the purchase of products connected to building interventions, such as electrical systems, video intercoms and alarm systems and LED lighting. It is not required to send any documents to our company. To take advantage of the deduction, simply indicate the total expense in your 730 or in the Unico form.
The documents to be kept are:
- Bank transfer receipt
- Purchase invoices showing the nature, quality and quantity of the goods purchased and, preferably, the buyer's tax code
Procedure to follow:
- Place an order on our site by selecting "Bank Transfer" as the payment method.
- Request the invoice and indicate the desired deduction in the order notes.
- Make the payment via bank transfer, compliant with the provisions of the Revenue Agency. The transfer must include:
- Reason for payment (include order number and date)
- Oniroview tax code and/or VAT number: 05660420877
- Tax code of the payer
In the absence of even one of the two fields indicated above, the order will be processed without invoicing.
10% reduced VAT for building renovations and conservative renovations ( 10% REDUCED VAT - 50% TAX DEDUCTION)
Purchase of goods, with the exclusion of raw materials and semi-finished products, used in conservative restoration and building renovation. Use for the purchase of LED lighting is permitted .
Requested documents:
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Copy of Identity Card
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Copy of valid tax code or health card
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Copy of DIA or SCIA or CIL (or building permit) where the "Type of intervention" is indicated
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Declaration for reduced VAT ( download the form here )
The documents indicated above must be sent to the email address amministrazione@oniroview.com , after completing the order. Once the documentation has been verified, we will issue an advance invoice with the reduced VAT to proceed with the payment.
Procedure to follow:
- Place an order on our site by selecting "Bank Transfer" as the payment method.
- Request the invoice and indicate in the order notes by writing "your tax code and advance invoice for renovation and restoration, VAT 10%" in the same 'Order note' field.
- Make the payment via bank transfer indicating the invoice number
In the absence of even one of the two fields indicated above, the order will be processed without invoicing.
VAT reduced at 4% for the construction of the first non-luxury home
The use of LED lighting for the purchase of non-luxury properties is permitted (the property must not have luxury characteristics, according to the criteria indicated in the decree of 2 August 1969).
Requested documents:
-
Copy of Identity Card
-
Copy of valid tax code or health card
-
Copy of DIA or SCIA or CIL (or building permit) where the "Type of intervention" is indicated
-
Declaration for reduced VAT ( download the form here )
The documents indicated above must be sent to the email address amministrazione@oniroview.com , after completing the order. Once the documentation has been verified, we will issue an advance invoice with the reduced VAT to proceed with the payment.
Procedure to follow:
- Place an order on our site by selecting "Bank Transfer" as the payment method.
- Request the invoice and indicate in the order notes by writing "your tax code and advance invoice for the facilitation of construction of a first home, VAT 4%" in the same field.
- Make the payment via bank transfer indicating the invoice number
In the absence of even one of the two fields indicated above, the order will be processed without invoicing.
Furniture Bonus
Purchase of Furniture and Appliances, including LED lighting for private individuals and condominiums. Legislative decree no. 63/2013 introduced a further 50% deduction for the purchase of furniture and large appliances and LED lighting, aimed at furnishing properties undergoing renovation.
The main prerequisite for obtaining the deduction is the carrying out of a recovery intervention on the building heritage (renovation, restoration, etc.).
It is not required to send any documents to our company. To take advantage of the deduction, simply indicate the total expense in your 730 or in the Unico form.
The documents to be kept are:
- Bank transfer receipt
- Purchase invoices showing the nature, quality and quantity of the goods purchased and, preferably, the buyer's tax code
Procedure to follow:
- Place an order on our site by selecting "Bank Transfer" as the payment method.
- Request the invoice and indicate in the order notes by writing "your tax code and "advance invoice for mobile bonuses" in the same field.
- Make the payment via bank transfer indicating the invoice number
In the absence of even one of the two fields indicated above, the order will be processed without invoicing.
VAT exemption with Reverse Charge and Split Payment
To take advantage of reverse charge and split payment on Oniroview.com, Public Administration suppliers and companies that perform services through procurement and subcontracting contracts must follow this procedure:
- Complete the order on our website by selecting "Bank transfer" as the payment method.
- Specify in the order notes that you have the necessary documentation for VAT-free payment.
- Send the documentation to facilitazioni@oniroview.com , including the order reference.
After verifying the documentation, we will issue an advance invoice with the reduced VAT to proceed with the payment.








