Check the batteries! Battery failure is often the common cause for the sensor or instrument failure. Simple to use, portable universal battery tester for the standard and rechargeable batteries.

• Easy-to-read color-coded display with “good,“low and “replace/recharge indicators
• Works with standard and rechargeable batteries
• Compatible with: 9V, AA, AAA, C, D, 1.5V button type
• Compact design
• Ergonomic battery holder
• Users manual included