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...Wholesale Direct Prices on Home Health Diagnostic Test Kits... Alcohol and Drug of Abuse Screening, Pregnancy and Fertility Testing, General Health Diagnostics... Low Cost, Fast, Accurate and Confidential Diagnostic Health Solutions...

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Alco Alert J4X

ALERT J4X Professional

Mouthpieces Still Available (See Below)

Alternative/Comparable Model: AccuCell AL9000 Fuel Cell Breathalyzer

The ALERT J4X Professional evidentiary model alcohol breathalyzer features the latest technology in high quality electrochemical fuel cells and was designed specifically for law enforcement, department of corrections, government compliance programs, probations and commercial or personal use applications requiring the highest standards in accuracy testing rates. The ALERT J4X complies with the testing standards for accuracy established by the U.S. Department of Transportation. The ALERT J4X is the newest, most advanced portable alcohol breath analysis system available with sophisticated self contained computer digital electronics and precision fuel cell accuracy. The ALERT J4X employs an advanced 16 bit A/D converter microprocessor chip and integrated gas sensor to instantly display equivalent Blood Alcohol Content (BAC) on a large, backlit digital display.


The ALERT J4X Professional was developed and manufactured to provide reliable, fast and highly accurate alcohol breath analysis in a compact, portable and user friendly electronic device.  Constructed from the highest quality components available, the ALERT J4X  is intended for heavy commercial and law enforcement use without compromising sensitivity and accuracy. Advanced power circuitry and automated sample processing allows for up to 100 test procedures from its rechargeable NiCd battery power pack. The oversized LCD digital display utilizes simple visual prompts to show internal self diagnostics and recalibration, test progress and test results. Audible tones prompt for test start then signal  breath sampling progress and test completion. The unit's electronic sensor automatically calculates the correct breath sample amount required and will report a test error for under blows thus eliminating test subject sample manipulation. Additionally, The ALERT 4JX model includes 5 specially designed non-disposable one-way mouthpieces that prevent subject manipulation of breath sampling by "blow back" and insuring proper breath sampling. Key on chip functions include self diagnostic checks for calibration and accuracy,  automatic recalibration, sample volume to alcohol content logarithm and real time clock self adjustment. The ALERT J4X is intended for law enforcement field use and any other application, including personal use, requiring rapid and evidentiary accurate alcohol breath analysis.   


Extremely easy to use, with most test operations completely automated, the ALERT J4X Professional is the model of choice for anyone serious about alcohol use, abuse, detection and prevention.  Highly sensitive, with a detection range of .000 to .400 % BAC and field accuracy rate of .005 @ .100 BAC, the ALERT J4X complies with the testing standards for accuracy established by the U.S. Department of Transportation and other regulating authorities. The ALERT J4X Professional model is also ideally suited for zero tolerance alcohol testing programs where even the smallest amount of system alcohol can be detected. Key specifications and features of the ALERT J4X Professional model are as follows:

Alcohol specific, semi-conductor sensor
16 bit microprocessor and converter
Advanced 4 digit bright LCD display
Programmed internal self-diagnostics
Automatic sensor calibration self adjusting
Automatic sample volume detection
Visual and Audible test prompts
Instant response time
45 second maximum recovery time
Detection Range .000 to .400 BAC
Accuracy at .005BAC to .100BAC and 5% above .100.

Alert J4X

Calculation logarithm % BAC standard
Ambient Temperature Range 0-170 F (-20-70 C)
Pocket sized 6 x 3.2 x 1.4 inches (15 x 8.8 x 3.5 cm)
Weight 9 ounces (250 grams)
One-way round mouthpieces
Fast, simple operation
Automatic calibration
Rechargeable NiCd Battery pack
100 test capacity on full battery charge
25 second automatic power shut off
One year factory warranty; parts and labor.
Alert Case

Operation is fast, with an instant response to negative and positive tests, and a maximum 45 second recovery time. Microprocessor monitoring of breath flow, unique one-way flow mouthpiece design, and an alcohol specific semi-conductor fuel cell sensor combine to automatically assure the accuracy of alcohol breath testing and analysis. One button operation, auto calibration, shirt-pocket size, and a host of exclusive convenience features make the ALERT J4X Professional model stand alone in field sobriety testing and analysis. The large graphic LCD display and high powered internal software give the operator visual and audible prompts and error messages minimizing operator error and simplifying the test procedure. This evidentiary quality breath analyzer is recommended for "on the spot" testing whenever alcohol consumption is planned or intoxication is suspected. The ALERT J4X should provide accurate readings indefinitely as long as the microprocessor and sensor cell are not internally damaged. For additional information on technology method and specificity expectation see Technology and Accuracy.

Alert J4X Display



The ALERT J4X housing is constructed of commercial grade, high impact ABS polymers with a scratch resistant high density crystal acrylic display providing superior protection to the internal microprocessor and computer circuitry. Each unit comes in a hard shell, protective storage and carrying case for mobile and field use. Electronics are shock resistant and solid state. Mouthpieces are specially designed to provide one-way breath flow only thereby eliminating test subject sample manipulation by suck back or under flow. Given simple routine maintenance, the unit should provide unlimited service in a commercial use environment.          


Alert Case 1

Alert J4X Mouthpiece

One-way Flow Mouthpiece

Each ALERT J4X professional unit comes with a high impact, molded storage case, rechargeable NiCad internal battery pack, AC charging adapter, operation and calibration manual, calibration adapter, and five (5) one-way flow mouthpieces. Extra mouthpieces are available in bulk separately. Mouthpieces are high grade plastic and disposable however they can be re-used if washed in hot water between uses in personal use or lower volume testing applications. Additionally, the ALERT J4X unit must be used only with its specially designed mouthpiece or damage to the fuel cell sensor could occur along with inaccurate test results. Failure to use ALERT J4X mouthpieces in operation of the unit may void the manufacturers warranty.



Sale Unit



 ALERT J4X Pro Evidentiary Breathalyzer

Molded Case

One (1) Unit



Three (3) Units


Alert J4X One-Way Flow mouthpieces

Poly Each

25 pack



100 pack



250 pack


*If the order buttons are absent or inoperable, please use the pricing overview page to order.

For purchases of Five (5) units or more please contact us by e-mail Customer Service
*Note: The ALERT J4X cannot be shipped to a PO Box address

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