A security mailbox system known as Safe \u201cT\u201d Box being a fully enclosed square mailbox that can be designed from PVC or some fabricated material, the Safe T Box is easy to install, environmentally friendly and will provide long service life. Embodiments herein disclosed provide for an enterprise wide e-discovery system that provides for data to be identified, located, retrieved, preserved, searched, reviewed and produced in an efficient and cost-effective manner across the entire enterprise system. In many embodiments, the angle of slope of the said wedge faces is so selected that the wheel brakes in any case with normally prevailing coefficients of friction \u03bc are self-locking. The detector mounted substrate is provided with a pair of positioning pins. At least one circuit component is attached to the at least one solder pad using the solder. The wireless IC element is connected to the first radiation element and the second radiation element so as to extend across the slit.