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LED Backlight Accurate Sensor Breath Concentrated Test Tester Detector
Product Attributes:
* Material: ABS,
* Color: Black,
* Dimensions: 7*2.5*11.8cm,
* Testing Range: 0.00-0.19%,
* Testing Target: Driver,
* Type: Breath Type Tester,
* Testing Accuracy: +/- 0.02% BAC,
* Display Resolution: 120,
* Voltage: 3V,
* Power Supply: 2 * AAA Battery(not included here).
* Package: 1 * A lcohol Tester
Product Features:
1. LCD Digital display(minimum unit 0.01% BAC and 0.1g / L),
2. Testing Range: 0.00-0.19% BAC and 0.0-1.9g / L,
3. Rapid response and recovery,
4. Optional alarm point,
5. Automatic shutdown and power-saving function,
6. Comes with a key chain, it's easy to carry,
7. Blowing Nozzle can be replaced.
Technical parameters:
Sensor: Semiconductor Sensor,
Warm-up Time: within 10 seconds,
Response Time: within 5 seconds,
Working Temperature: 5-40 degrees celsius,
Testing Range: 0.00% -0.19% BAC and 0.0-1.9 g / L,
Power Supply: 2 x AAA Batteries(not included here).
Instructions:
Press and hold the ON / OFF key for 3 seconds to turn on the tester and go into about 10 seconds warming up. Starting to exhale(continuous exhale 3 to 6 seconds to go into 5 seconds' response time, the test results will display on the LCD at the same time, then it will automatic shutdown after 5 seconds.) when the screen display BIOW. During the test, don't need any other operation, just blowing and reading.
Works Principle:
When the gas sensor does not detect it, the level plus to A in the 5 pin is low, and when the gas sensor detects it, the internal resistance of the sensor becomes low, so that the 5 pin level of A becomes high. A is the display pusher, it has 10 outputs, each output can drive a light-emitting diode, the display pusher A according to the level of the 5 pin to determine and light up the light-emitting diodes in order, the higher the content, the more of lighting the diode numbers. The top 5 light-emitting diodes are red, indicating that the safety level is exceeded. The following 5 light-emitting diodes are green, indicating the safe level, contents are not more than 0.05%.