One thing to keep in mind when choosing your wireless doorbell is if you want a battery or a mains model. Whilst the doorbells use very little power, the battery models will need the batteries replaced once and a while (as a rough guide, consider how often you might replace a battery powered smoke detector).
Managing Director average salary is $170,310, median salary is $150,000 with a salary range from $25,979 to $1,500,000.Managing Director salaries are collected from government agencies and companies. Each salary is associated with a real job position.anaging Director Salary. Managing Director average salary is $170,310, median salary is $150,000 with a salary range from $25,979 to $1,500,000. Managing Director salaries are collected from government agencies and companies.
For example the median expected annual pay for a typical Project Management Director in the United States is $136,299, so 50% of the people who perform the job of Project Management Director in the United States are expected to make less than $136,299. Source: HR Reported data as of October 2015.1  Salary.his chart describes the expected percentage of people who perform the job of Project Management Director in the United States that make less than that annual salary.