The dimension of this wireless camera is very small, only 2 x 2 cm. In addition, the diameter of its lens is only 2mm (pinhole) which enables this camera to be used as a hidden cam. Just watch the comparison of the size between this camera with a 9V battery. This pinhole camera does not come with bracket so that it can be put easily at hidden places using double tape or glue. A set consists of: a camera, a receiver, an adaptor, a 9V battery connector and a ready to use 1/2 m RCA cable.

There are several disadvatanges of using this security camera. With minimum ilumination of 2 lux, it is only suitable to monitor rooms which are bright enough. Another limitation is the maximum distance between this camera and the receiver is only 20 metres. In addition, utilizing CMOS color, the images generated will not be so sharp. Signals with the same frequency produced by other resources might also cause interference.

However, despite all of its weaknesses, this wireless pinhole camera can be the right device for people who want to increase the level of their home security without having to spend much money. Its price is only about US $40. Its dimension and its wireless capabilities can make this camera very hard to find by intruders. Just install it behind a picture, a clock or any other hidden locations.

This wireless indoor camera is built from alumunium die cast material. Its dimension is quite small, only 3 x 3.5 cm with a 4 mm lens. The maximum range of signal transmission from the camera (with built-in transmitter) to the receiver is about 20 metres. Utilizing radio wave 1.2 GHz, the signal transmitted can pass through walls and cannot be catched by television set without using a receiver.

However, one of the weaknesses of this wireless security camera is it can only perform well in bright room. As a note, this camera has minimum illumination 1 lux. Another weakness, with CMOS sensor the images captured are not clear enough. However the price is quite cheap, about US$ 40, including a receiver, a 9 V battery and an adaptor. Moreover, this mini security camera also provides a built-in microphone that might be useful in some situations.