Best Dial Home Air Fresheners

Specification: Continuous operation time: more then 4 hours probe length: 30cm warm-up time: approximately 30 seconds response time: instantaneous Duty cycle: continuous; no limitation operating temperature range:14℉ to 122℉ /-15℃ to 50℃ sensitivity: variable, as low as 5ppm(gasoline) Power suppy: alkaline battery(AAA/7) size: 120*65*25mm Operatiing instructions: once the batteries are placed, the instrument is ready to use (before use, carefully read nd understand the warmings and cautions on the previous age). 1. Turn the sensitivity control fully counter clockwise. 2. Turn the instrument on in a non-contaminated atmosphere by moving the slide switch to the ""ON"" position. The power light should be lit. NO sound will be heard. 3. After the automatic warmup period is completed, about 30 seconds, atiching sound will be heard. 4. Adjust the sensitivity control until a rapid ticking signal is heard(Hi sensitivity) 5. The frequency of the tick is an indication of the sensitivity, retate the knob until the ticking is rapid, for Hi sensitivity, or slow, for Lo Sensitivity. NOTE: if a steady tick rate can't be maintained, it is indicative that the batteries may need to be rechanged. 6.Search the general area of the leak, when a detectable compound enters the tip, the tick rate speeds up. 7. In most cases, it will not be necessary to adjust the sensitivity of the unit. 8. If you are searching for extremely small leaks, make certain the control knob is in the Hi sensitivity position (rapid ticking) NOTE: although the unit will respond to high levels of carbon monoxide (above 2000ppm), it should not be used as a detector for this gas in normal room or working atmospheres, it can be used to pinpoint a leak as described in the operating instruction. Package: 1* gas detector 1.English manual