When you first get hired to a job, the employer quotes your gross salary or gross hourly pay. But your net salary will most likely matter to you more in your day-to-day life....
At higher than normal operating temperatures, for every additional 15Â°F (8Â°C) battery life is decreased by 50 percent. Therefore, continued operation at an average cell temperature of 92Â°F (33Â°C) will reduce battery life to 50 percent of that typical at 77Â°F (25Â°C).
5 I contacted the manufacturer and following is their response: Regular alkali batteries will operate outdoors to about 25 degrees F. Below this they get too cold to generate enough power to broadcast the signal. Lithium batteries will operate to about -4 degrees F. If the temperature is colder than this, the display will show LL.L until the temperature rise above -4. Hope this information proves to be helpful to you. Living in Michigan, this isn't exactly helpful, but at least it verifies the status of the unit.