Portable alcohol tester BLOW 3300 — contactless breathalyzer, BAC 0.00–0.19%, 1% accuracy, LCD, AAA batteries

BLOW 3300 is a compact contactless portable alcohol tester designed for quick breath alcohol concentration checks. The device measures blood alcohol concentration (BAC) from 0.00 to 0.19% with 1% accuracy, displays results on an LCD, and is housed in an ABS plastic body. It is lightweight and powered by two AAA alkaline batteries, which are included.

Advantages

The contactless design allows measurement without a mouthpiece, reducing cross-contamination risk and enabling fast checks. With a 2 s warm-up and typical measurement time around 5 s, the tester provides rapid results. The built-in LCD clearly shows readings, and the integrated alarm notifies when measured values exceed a set threshold. The compact size and low weight make the unit easy to carry and use in field or personal situations.

Suitable for

• Personal pre-driving checks
• Workplace spot checks and safety supervision
• Event or venue entrance screening
• Quick screening during travel or fieldwork

Key specifications

• Measurement type: Contactless breath analysis
• Measuring range (BAC): 0.00–0.19%
• Accuracy: ±1%
• Warm-up time: 2 seconds
• Measurement time: approximately 5 seconds
• Display: Built-in LCD
• Material: ABS plastic
• Power: 2 × AAA alkaline batteries (included)
• Color: Black
• Weight: 53.1 g
• Dimensions (H×W×D): 102 × 35 × 17 mm

How to use

Insert two AAA alkaline batteries, place the device at the recommended distance from the subject’s mouth according to the user manual, switch the unit on and wait for the 2 second warm-up. Ask the subject to exhale gently in the direction of the sensor area; the device will complete measurement in about 5 seconds and display the BAC value on the LCD. If the alarm threshold is exceeded, the audible alert will activate. Follow any safety and legal guidelines applicable in your area when interpreting results.

Recommendations

For consistent readings, perform measurements in a stable ambient temperature and avoid recent consumption of alcohol, smoking, or mouthwash immediately before testing. Replace batteries when low and store the device in a dry place. Refer to the manufacturer's manual for calibration intervals and detailed safety instructions.