• Audible alert when Danger level is detected
• Real time and alarm time
• Quick response and resume
• Auto power off; Low battery indicator
• Easy to use; Simply blow into the vacuum vent and you will get the results in seconds
• No need to recalibrate; Reusable many many times.
• Clean， your mouth will not need to touch the tester
• Digital clock can display real time and temperature; you can also use it to set up alarm and count down timer

Package includes:

1 x ATX power tester