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What is the difference between the Honeywell 5811 and 5816?Last Updated: 12/02/2013 |
Keeping in line with the sizes of the products, the 5816 requires a larger, cylindrical CR123A 3V battery, which should last 3-5 years. The slim 5811 uses a smaller, disc-shaped CR2032 3V battery, which lasts an average of 4 years. |