CS203X - Integrated Intelligent RFID Reader

CS203X is the next generation of ruggedized IP68 intelligent integrated readers from CSL. Offering an event engine with multiple layer nested logic for full embedded business automation. The CS203X offers a powerful edge server to allow easy HTTP access for configuration, status monitoring, and direct RFID inventory. 

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About the CS203X

Integrated Antenna, Linux Powered, Run Custom Code, Long Read Range

Many applications only require one antenna to effectively read RFID tags. The CS203X includes an integrated circular polarized antenna with a read range up to 22meters (tag and environment dependent). The CS203X allows you to start reading RFID tags without running long coax cables to costly external antennas. 

This read range enables fast inventory of items on pallets, warehouse shelves, moving vehicles, and other tagged items in business processes where fixed reader class performance is required.

CS203x Connections

CS203X Waterproof Connection Ports


CS203X Has Multiple Mounting Holes

CS203x Pole Mounted

CS203X Can Be Pole Mounted

Integrated Antenna

The CS203X includes a built in circular polarized antenna so setup is quick and easy.


The CS203X is rugged and ready for outdoor use with an IP68 rating and waterproof antenna, power, Ethernet and serial connections. 

Event Engine

The CS203X has a power event engine that enables advanced automation and no coding is required. 

Flexible Coding Option

The CS203X supports the same API's as previous CSL readers and can run  custom embedded code on a Linux platform.


Choose the right accessory for you application. 

We know each project has has different RFID tag reading requirements and environmental conditions. The CS203X is designed for indoor and outdoor use, for more rugged conditions consider are waterproof connectors. An external antenna can also be connected to the reader to expand the RFID tag reading area, we recommend the CS776 antenna. 

All Accessories Below are Waterproof

Power Adapter

The waterproof power adapter has a special connector that can screw on tightly for a secure power connection.  

Debug Serial Cable

The waterproof debug serial cable can be used to configure settings on the reader with an RS232 serial connection. 

Ethernet Cable

The waterproof ethernet cable has a special connector that can screw on tightly to the CS203X to prevent water and moisture from getting into the reader. 

GPIO Cable

The waterproof GPIO cable has a special connector that can screw on tightly to the CS203X to provide a secure connection. 

Start Developing for the CS203x

The CS203X can support custom embedded code to run advanced logic right on the reader. You can code your own advanced tag filtering rules or even control external devices. See our example code on GitHub.

The CS203X can also support CSL HTTP/XML protocol with full event engine management, CSL Unified Protocol, LLRP Protocol,  and MACH1. 

Get started with the CS203X integrated reader!

The CS203X is being used across a wide variety of industries.




Physical Characteristics (LxWxH)

266 x 266 x 105 mm

Edge Software

CSL HTTP/XML protocol with full event engine management, CSL Unified Protocol, LLRP Protocol,  MACH1 protocol, Custom Embedded HTTP RFID and CS108 Bluetooth API

RFID Engine

Impinj Indy R2000



Read Range

Read distance up to 22 meters (tag and environment dependent)


ISO18000-6C, EPC UHF Class 1 Gen 2, Dense Reader Mode available (Class 3 Gen 2 compliant)

Tag Information

All banks, any sizes (e.g. 240 bits bank1, 512 bits bank3); RSSI value

Frequency Range

One of the following: 865-868 MHz, 865-867 MHz, 902-928 MHz, 922-928 MHz, 920-925 MHz, 915-922 MHz, 915-921 MHz

Integrated Antenna Polarization


External Antenna Port

1 Monostatic Reverse SMA Port

Operating System



Dual Core Arm Cortex A9, 1 GB DDR3 RAM


Operating Temp: -20°C to 50°C (-4°F to 122°F)

Storage Temp: -40°C to 85°C (-40°F to 185°F)

Humidity: 98% Non-condensing

External Control

4 x GPO and 4 x GPI, Optically isolated, additional isolated 12V output


DC Supply (12V, 5A) or POE+ (IEEE802.3at)

Dust and Water Proof


Mounting Style

100 x 100 mm VESA M6 Threaded Holes (M6 ScrewsMounting Style provided)

2 Yr


You are protected by our 2 Year Factory Warranty

All CS203X units are covered by our 2 year factory warranty. You can purchase an option 1 year warranty extension. 


Here are some common questions about the CS203X.

Is there a Wi-Fi communication option

How do I become a distributor

How do I find a distributor

What tag was used to calculate the 22 m read range

I'm a developer, where can I find sample code

Can I control external devices over USB