Suggested Retail:$99.45. Car, Vehicle, Aircraft Carbon Monoxide CO Detector | Fast Low-Level 9ppm Alarm | Vehicles, Police, Pilots, Travel, Bus, Trucks | Metal Body, Small 2oz |. USES: Exhaust leaks in vehicles (i.e. SUVs, aircraft, school buses, trucks & fleet vehicles that triggers headaches, nausea & driver fatigue. ACCURATE: CO low-level alarm at 9ppm & 25ppm alarms WHO, EPA, ASHRAE, OSHA, NIOSH CO recommended exposure levels. FAST ALARMS: Alarms at >9ppm @ 60 secs, compared to home CO detectors that only alarm >70ppm @ 60-240 minutes. Bright RED LED and buzzer alarms. EASY USE: Continuous 8-12 month operation with same batteries. Easy one button operation. Small form factor (2oz), 3M stick-on mount.. . 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.