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header-product InLine 33307E Serial Converter Repeater Isolator USB 2.0 to RS-232 Black with Lightning Protection
35.49 €

InLine 33307E Serial Converter Repeater Isolator USB 2.0 to RS-232 Black with Lightning Protection

InLine 33307E USB to RS-232 Serial Converter Photo 1
InLine 33307E USB to RS-232 Serial Converter Photo 2
InLine 33307E USB to RS-232 Serial Converter Photo 3
InLine 33307E USB to RS-232 Serial Converter Photo 4
InLine 33307E USB to RS-232 Serial Converter Photo 1
InLine 33307E USB to RS-232 Serial Converter Photo 2
InLine 33307E USB to RS-232 Serial Converter Photo 3
InLine 33307E USB to RS-232 Serial Converter Photo 4
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InLine 33307E Serial Converter Repeater Isolator USB 2.0 to RS-232 Black with Lightning Protection

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InLine 33307E Serial Converter Repeater Isolator USB 2.0 to RS-232 Black with Lightning Protection

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Short description

The InLine 33307E is a reliable USB 2.0 to RS-232 serial converter, repeater, and isolator designed for stable data communication. Featuring built-in lightning protection, it ensures secure signal transmission in demanding industrial and office environments. Compatible with various Windows and macOS operating systems, this compact black device is ideal for connecting legacy serial equipment to modern computers.
Available for order: 49 pcs.
Warranty: 2 Years
SKU: 12649370
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
04.11.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
09.11.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.03 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
09.11.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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Payment Methods:
Bank transfer
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Product information

Description

The InLine 33307E is a reliable USB 2.0 to RS-232 serial converter, repeater, and isolator designed to provide stable data communication in demanding office and industrial environments. Featuring built-in lightning protection, overvoltage safeguards, and electrostatic discharge resilience, this compact black device ensures secure signal transmission between modern computers and legacy serial equipment. Its robust physical design and wide operating temperature range make it a dependable component for professional communication setups.

Advantages

This serial converter offers high operational reliability through integrated lightning and ESD protection that shields interfaces against voltage spikes and electrostatic discharges. The inclusion of a reliable chipset enables stable communication via a virtual COM port while supporting high baud rates. Commissioning is streamlined through automatic hardware-based direction switching for half-duplex operation without requiring extra software configuration. Additionally, the device supports flexible system integration across multiple operating systems and features status indicators for power, transmission, and reception.

Suitable for

  • Connecting legacy serial equipment to modern computers with USB-A ports
  • Industrial automation and control technology tasks
  • Building automation and energy monitoring systems
  • Office environments requiring stable serial data communication

This device may not be suitable for applications that strictly require an RS-485 interface instead of RS-232, or for network topologies that exceed the intended operational scope without proper extension equipment.

Key specifications

  • Host interface: USB 2.0
  • Output interface: RS-232
  • Connectors: USB Type-A and terminal block
  • Data transfer rate: up to 512 Kbit/s
  • Color: Black
  • Dimensions: 22 mm width, 78 mm depth, 11 mm height
  • Supported operating systems: Windows 7, 8, 8.1, 10, 11, and macOS

To use the device, connect the USB-A cable to a compatible computer and attach the appropriate serial lines to the terminal block. Ensure that the operating system recognizes the virtual COM port and install any required drivers for the chipset. Verify that the cable connections are secure before initiating data transfer between the connected systems.

What to consider before purchase

  • Compatibility with your specific operating system version
  • The interface type required by your serial devices
  • Physical dimensions and installation space
  • Environmental operating conditions

For optimal performance and longevity, ensure that all connections are properly secured and that the device is operated within the specified environmental and electrical parameters.

All features
Dimensions (WxDxH): Dimensions of the product (Width x Depth x Height).
22 x 78 x 11
Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.014 kg
Operating relative humidity (H-H):
5 - 95
Chipset: Set of electronic components in an integrated circuit that manages the data flow between the processor, memory and peripherals. It is usually found in the motherboard of a computer. Chipsets are usually designed to work with a specific family of microprocessors. Because it controls communications between the processor and external devices, the chipset plays a crucial role in determining system performance.
FTDI FT232RNL
Package weight: Weight of the packaged product.
33 g
Mac compatibility: Product can be used with Apple Mac software and/or hardware.
Yes
Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
-15 - 70
Height: The measurement of the product from head to foot or from base to top.
11 mm
Width: The measurement or extent of something from side to side.
22 mm
Depth: The distance from the front to the back of something.
78 mm
Product colour: The colour e.g. red, blue, green, black, white.
Black
Host interface: Interface that enables a host controller to communicate with a driver.
USB 2.0
Country of origin: Country where the device is made. Aka Country of manufacture (COM).
China
Package depth: The distance from the front to the back of the packaging.
165 mm
Package height: The distance from the top to the bottom of the packaging.
22 mm
Package width: The distance from one side of the packaging to the other.
100 mm
Package type: The type of product package e.g. box.
Polybag
Connector 1: This is the first connector in the device.
USB Type-A
Connector 2: This is the second connector in the device.
Terminal block
Output interface: The ports (sockets) where the device is connected via connectors and cables to external devices.
RS-232
RS-232 signals:
GND, Tx, Rx
Isolation:
2.5 kV
Electrostatic Discharge (ESD) protection:
15 kV
Baud rate:
512 Kbit/s
RS-485 signals:
GND
Windows operating systems supported: Windows vesions wich can be used with the device.
Windows 7, Windows 8, Windows 8.1, Windows 11, Windows 10, Windows XP
Mac operating systems supported: Mac operating systems e.g. OS X can be used with the device.
MacOS
Package volume:
400 cm³
Connector gender: To distinguish parts on a cable interface, connectors are grouped under genders. Sockets or jacks are considered to be female whilst plugs are referred to as male.
Male/Female

Description

Machine translation. Load original

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Product comparison

The InLine 33307E USB to Serial RS485 Converter with Lightning Protection is compared against similar alternatives from InLine and StarTech. All are designed for industrial automation, networking, and legacy equipment integration, but they differ in interface standards, protective features, and physical build.

⚙️ The table below compares the interface type, primary purpose, protective and design features, and the practical significance of these differences.

ParameterInLine 33307EInLine 33307CInLine 33307DInLine 33307AStarTech IC232485SPractical significance
Interface typeUSB to RS485USB to RS485USB to RS485USB to RS232RS232 to RS422/485Determines compatibility with the target serial equipment and host port type.
Protection and featuresBuilt-in lightning protectionFTDI chipset for stabilityBuilt-in isolatorTerminal connectionSteel housing, 15kV ESD protectionThe 33307 series focuses on line-level electrical protection, whereas StarTech offers rugged physical housing and heavy-duty ESD defense.
Primary purposeCommunication in lightning-prone environmentsStable data transmission and OS compatibilitySecure transmission with galvanic isolationRS232 legacy device integrationProtocol conversion and demanding environmentsAllows matching the adapter to specific electrical and physical operating conditions.

◎ The table below evaluates the suitability of each product for different user needs and use cases.

Use caseRecommended productWhy
Industrial environments with exposure to lightning surgesInLine 33307EEquipped with built-in lightning protection for safer communication lines.
Applications requiring proven chipset compatibilityInLine 33307CUtilizes a reliable FTDI chipset for stable data flow.
Environments with high interference requiring isolationInLine 33307DFeatures a built-in isolator to prevent ground loops and electrical disruptions.
Connecting RS232 equipment via terminal blocksInLine 33307ADesigned specifically for USB to RS232 conversion with a terminal connection.
Demanding conditions needing heavy-duty electrostatic protectionStarTech IC232485SProvides a robust steel housing and 15kV ESD protection for harsh environments.

The InLine 33307E USB to Serial RS485 Converter with Lightning Protection differs from alternatives by incorporating specialized lightning protection for RS485 serial communication. It is most suitable for industrial and commercial automation setups where signal lines face potential surge risks, making it a specialized choice compared to models featuring standard isolation, FTDI chipsets, or RS232 support.

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Customer reviews

Customer questions

FAQ

How much does the InLine 33307E USB to RS-232 Serial Converter cost, and is it available for purchase?

The price is 35.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 49 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 04.11.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All InLine products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized InLine service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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