We also have other reader versions, uniquely developed by us, including:
1) USB Plug Play version; you can read your gas data Anytime Anywhere with a USB Power Bank / Adapter, Portable and Convenient.
2) Remote Reader version, you can read your data OUTSIDE gas chamber with no protection needed. Suitable for outdoor field work;
3) Computer Log version, you can remotely and simultaneously read and record your data in computer, save data in Excel for later 
Data Analysis use. Free Software; Operational Manual can be downloaded from our Website.
4) Dissolved Gas Water Reader version, quickly read Dissolved Gas Concentration in water, Best Water Reading Pen in market.
5) Gas Monitoring and Automatic Switch On / Off Control Board for Ozone (and other gases) Generator, Customizable and Cost Effective solution
6) Protective Covered version which can be OEM, ODM, add Logo, Names, Slogan etc.,

Some Examples:

Our Gas Monitoring and Automatic Switch On / Off Control Board for Ozone Generator, please click here:
https://www.ebay.com/itm/133470354397

Our Dissolved Ozone (0-10.00 mg/L) Water Tester please click here:
http://www.ebay.com/itm/143556649753

Our Remote Ozone (0-10ppm) USB Plug Play Reader please click here:
https://www.ebay.com/itm/143609210205

Our Remote Ozone (0-100ppm) USB Plug Play Reader please click here:
http://www.ebay.com/itm/133361939711

Our Ozone Reader (0-10ppm) with Computer Log Function please click here:
https://www.ebay.com/itm/143609224354

Our Ozone Reader (0-100ppm) with Computer Log Function please click here:
http://www.ebay.com/itm/133365129592

Our Ozone (0-10ppm) USB Plug Play Reader please click here:
https://www.ebay.com/itm/133132347998

Our Ozone (0-100ppm) USB Plug Play Reader please click here:
https://www.ebay.com/itm/143609223620

Our Ozone (0-100ppm) Reader with Cover, please click here:
https://www.ebay.com/itm/133445798616

We offer Custom Design and Manufacturing Service with No Minimums Required! 
Please contact us if you need your reader / controller to be custom manufactured. 
We can discuss the Range and Function and we will quote you within 24 hours.

Product Features:

(1) High Sensitivity, this sensor responds quickly to the testing environment, warmed up in the factory so ready to use

(2) High accuracy, sensor pre-calibrated already in factory, various output options. After comparison with other sensor, 
this sensor showed low deviation rate from other brands. we normally use UART but can offer other connections

(3) After hundreds of testing by our engineers, this sensor proves  Accuracy, Stability and Long Life Cycle, 
RoHS Certification Passed, Anti-Explosion and Coal Mining Safety Certification passed.

(5) Guaranteed Best and In Depth Consultancy Service on Internet, We offer the most Cost Effective Solution 
to help our customer succeed smoothly and quickly in their projects. Please check our customer feedback.

(6) Free Shipping Worldwide! We will use Fastest Express Shipping. DHL, FeDex alike carrier used.
 Tracking number will be provided! 

(7) FULL REFUND for item Not Working or Lost in Mail! No Questions Asked Policy.  
100% Customer Satisfaction, please Buy with Confidence. 
Positive Feedback Left Automatically and Immediately after order being placed! 

(8) 24 X 7 Supports, Full Technical Support Before and After Purchase! FAQs, Technical Guidance, Software, 
  PDF Manuals can be found on our Website.

(9) Please CONTACT US if any questions on products or service (Bulk Discounts, Modification, Function 
Upgrade, Shipping, Invoice etc.,), we will answer every question Seriously, Shortly and Accurately!

(10) We offer Custom Design and Manufacturing Service with No Minimums Required! Our 
   RELIABLE, DURABLE and ECONOMICAL products have helped our customers succeed globally in various industries.

Please check lists of our other sensors / readers here: 

https://www.ebay.com/str/jsr2industries/Gas-sensor-detector-module/_i.html?_storecat=27834509016

You can find more Questions and Answers from our Website Support section, here are some extracts:

What is the difference between Remote Reader and Computer Log version Reader?
A: Both reader consist of two USB devices, one is gas reader and transmitter, another function as data receiver. 
Both can collect data simultaneously and remotely!  Remote reader can pick up data outside gas room with 
another USB powered display so no computer needed on site (suitable for field work). Computer Log Reader 
can Read and Record data on Computer, you can save it in Excel format and use the data for later analysis or demonstration purpose.

How to read the figure on USB Gas Reader?
A: Firstly reader decimal point positions various depends on sensor detection range. For 0-100ppm reader, as its maximum range 
is 100ppm, resolution is 0.1ppm, so when it displays 009.3, it means 9.3ppm. If it displays 0.251, gas concentration is 
25.1ppm. (Easiest way is just read last 3 digits and ignore first digit). For 0-10ppm reader, if reader displays 8.400, it means
gas concentration is 8.4ppm. (Easiest way is read first 2 digits and ignores last 2). 

Do you have All in One reader which can read different gas and display in one device?
A: Yes we have, and we can design and produce a device that can read various gases and display all data in one device. Please contact us with 
your request and gas type; we will quote you within 24 hours.

How far is Bluetooth Allowed Remote Distance?
A: Technically 10 meters. But this varies depends on the quality of wall / house and whether there is disruptions. Reading 
between one wall should be no problem. We soldered Bluetooth modules on both USB devices so please face two modules with 
each other and minimize anything in between to get better signal. 
Our Bluetooth module connects automatically so no manual setting needed.

Can you provide invoice?
A: Yes we can provide commercial invoice and Pro-forma upon request.

Our Detected Gases Sensors and Modules including:
Carbon Dioxide gas (CO2) / Oxygen (O2) / Ozone (O3) / Alcohol (C2H5OH) / Air Quality: TVOC ETO / Smoke sensor / Combustible gases such as methane (CH4), propane (C3H8), butane (C4H10), Hydrogen (H2) / Toxic gases: CO, H2S, NH3, HCL, SO2, NO2, CL2, C2H4…etc. / CO sensor / Dust Sensor / PIR Sensor / CH2O gas sensor / Gas flow sensor / MEMS Gas

Gas Sensor Type:
Semiconductor type / Infrared (NDIR) type / Flat surfaced type Semiconductor Sensor / Electrochemical (fuel cell) type / Catalytic / Solid electrolyte type / Thermal type /Hot wire type.

Applications
Automobile Industry Solution / Livestock -Husbandry Industry Solution /Atmospheric Monitoring Industry Solution / Chemical Industry Solution / Modern Agriculture Industry / Food Industry /Gas Detector Field