There are many uses for hidden wireless spy cameras including the detection of employee theft, catching abusing care givers, cheating partners, prying landlords and dishonest roommates.
1) There are black and white or color spy cameras.
You will get better object definition from a colour wireless spy camera but they have a propensity to be a tad more expensive. Black and white models normally produce slightly higher resolution pictures and are a little bit cheaper than the colour types.
2) Low light sensitivity
LUX is how the light sensitivity of a camera is measured. Spy cameras with better low light ability will have lower LUX ratings. A rating of 0.1LUX will give you a really capable low light spy camera. If you require pitch dark covert performance go for a spy camera unit with a rating of less than 0.03LUX.
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3) Picture image quality.
Measured in lines of resolution. The higher the number of TV-lines your camera outputs, the better the image quality will be. 380 lines of resolution is usually good enough even for professional private investigators.
4) Does the camera come complete with receiver?
The receiver is connected to your viewing / recording device: TV, VCR, PC or Digital Video Recorder (DVR), in order to view / capture the video and audio signal from the wireless spy camera. If the receiver is not included as part of the camera price, inquire how much one would cost and see if it meets your budget.
5) The radio frequency the camera Transmits on.
This is the wireless spy cameras transmission frequency range used to broadcast the video / audio signal to the receiver. The most common ranges include 434MHz, 900MHz, 1.2GHz, 2.4GHz and 5.8GHz . Probably the most popular frequency exists in the 2.4GHz range, this range is license free in America and all across Europe up to a yield of 10mW. It’s possible you could get wireless interference on any of the wireless ranges but as a result of the amount of items that utilize them, 434MHz and 900MHz can be particularly problematic.
6) The range of transmission
Measured in ‘line of sight’, it is the maximum distance between the wireless spy camera and receiver without obstruction or interference . The specified range will change from camera to camera and can be any thing from 150 feet to 1000 feet.
7) Disguised or hidden camera
There are tiny wireless spy cameras expressly made to be obscured by the user, however, there are lots of pre-disguised spy cameras that have been pre-created into ordinary looking every day object on the market. Eye glasses, cigarette packets, lamps, teddy bears, air fresheners, mirrors, Smoke detectors etc. So depending on the required use, you could purchase are pre-disguised unit and your all set to go. The wireless receiver part remains the same but pre-hiddden cameras can be easy and convenient solution as they are very easy to install.