LCD Screen High Precision Dual Purpose Air Blowing Alcohol Tester 503B Portable Digital Breath Analyzer

LCD Screen High Precision Dual Purpose Air Blowing Alcohol Tester 503B Portable Digital Breath Analyzer Description

LCD Screen High-Precision Dual-Use Alcohol Tester with Air-Blowing Measurement

This alcohol tester uses a semiconductor gas sensor to measure breath alcohol concentration with a range of 0-200mg/100mL. It is designed for both convenience and accuracy in everyday use, with an LCD screen for clear result display. The compact body measures approximately 135 x 64 x 24.5 mm and weighs about 68 g, making it easy to handle and store.

The device operates at 4.5V with a current of 120mA and is powered by 3 AA batteries, which are not included in the delivery. This battery-powered design supports portable use without the need for charging cables, making it suitable for quick checks when needed.

To use the tester for the first time, prepare 3 AA dry batteries, remove the battery cover, install the batteries, and close the cover before operation. Press the power button to start the device. After turning on, it enters a preheating countdown for 10 seconds; please wait for the preheating period to finish before testing.

Once preheating is complete, the device automatically enters a 10-second blow test countdown. Wait for the test result to appear on the display. After completing steps 2, 3, and 4, within 15 seconds after the result is shown, double-click the button to switch to the next measurement display unit.

The operating temperature range is -5 to 45 degrees Celsius, and the storage temperature range is -20 to 50 degrees Celsius. When the tester is removed from the package for the first time, or after being unused for a long time, gas and other impurities may adhere to the sensor. In this case, press the power button several times to clean the tester through preheating before normal use.