Batteries

Battery type

CBR™ 2 motion sensor is designed to operate with 4 AA alkaline batteries. CBR™ 2 motion sensor can run without batteries only if attached to a CBL 2™.

Battery installation

Exit the Vernier EasyData® App before changing batteries.

1. Holding the CBR™ 2 motion sensor upside down, use your thumb to slide the battery compartment cover toward the back of the CBR™ 2 motion sensor.

2. Position batteries according to the diagram on the inside of the CBR™ 2 motion sensor battery compartment.
3. Two batteries fit positive side up in the side marked +. Two batteries fit negative side up in the side marked
4. Slide the cover back on. CBR™ 2 motion sensor is ready to begin sampling.

CBR™ 2 motion sensor low battery warnings

The CBR™ 2 motion sensor has two mechanisms to alert you that the batteries are low:

• The Vernier EasyData® App displays a warning message on calculator screen while trying to collect data.
• The red light flashes intermittently while the CBR™ 2 motion sensor is collecting sample data.

Battery precautions

• DO NOT use rechargeable batteries.
• Replace all four batteries at the same time. Do not mix brands of batteries. Do not mix types within a battery brand.
• Install batteries according to the diagrams inside the battery compartment.
• Properly dispose of used batteries immediately. Do not leave them within the reach of children.
• Do not heat, burn, or puncture batteries. Batteries contain hazardous chemicals and may explode or leak.
• Do not mix rechargeable and non-rechargeable batteries.
• Do not place non-rechargeable batteries in a battery recharger.