Motorcycle Bearing Puller 9-23mm with 5 Clamps for Bicycle Gearboxes and Needle Bearings, Blow-Dry Case

Easy to install: The CO alarm comes with screws for easy wall or ceiling mounting. Powered by 3 AA 1.5V batteries (not included), it requires no wiring, is portable and easy to install, and doesn't need a power outlet. The battery ensures continuous monitoring, even during a power outage! The CO detector's battery can be used for approximately 36 months; it is convenient to replace the battery and has a long lifespan. High accuracy and reliability: Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels in real time. Instant alert: When the carbon monoxide detector reaches alarm levels, the CO sensor detects CO, the red LED flashes, the blue backlight of the LCD screen illuminates, and an early warning is issued with a loud 85-decibel alarm. Self-test function and informative LCD screen: The device beeps and the red LED flashes once when powered on, displaying "888" on the LCD screen. Then, press the test button; the device will beep with a flashing red LED. It displays real-time CO levels and memorizes dangerous CO levels from the last preset. "Err" on the LCD screen indicates that the device is not functioning correctly. "Lb" on the LCD screen indicates that the battery is low and needs to be replaced. "000" is displayed on the LCD screen for 3 seconds, then the device returns to normal operating mode. Wide application: Carbon monoxide detectors are suitable for living rooms, kitchens, bedrooms, offices, hotels, dormitories, and portable CO2 detectors for travel, etc. They can effectively prevent fire accidents and provide reliable protection for your family's safety.