In my last blog post I talked about keeping your family safe and I provided a 10-point list of things you can do to help in that mission. Today, I'd like to discuss the means whereby you can fulfill some of those points, specifically items 1 through 4.
There are many types of intercoms to choose from. Working our way down from the top two categories we're looking at:
- Professionally Installed, and
- Do It Yourself
The next decision that you will have to make involves the following:
- Hardwired, or
Do-it-yourself intercoms are available that are hardwired as well as wireless, the latter using batteries for their method of power. The cost of this type of system is relatively high by comparison, but you will save on hiring a pro by installing them yourself. The drawback to this, however, relates to the on-going need to replace batteries and the eventual risk of corrosion and the destruction of the metallic elements inside the battery compartments.
Cameras are available that contain infrared LEDs (Light Emitting Diodes) that light an area in front of the camera. There are cameras available that can see 30 feet ahead while there are others rated for 100 feet. The farther the distance, the more the camera will cost. If you're looking at the doorways, a 30-foot model will usually do the job quite fine.
No matter which way you decide to go, having a means of communicating and viewing the caller is critical to your safety. Even having a simple through-the-door lens/viewer will give you a leg-up on who's standing on the other side BEFORE you unlock and open the door.
Copyright©2014/Allan B. Colombo
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