A lens driver unit includes a plurality of lens groups including a first lens group and a second lens group, a first lens frame with first and second engaging portions, a second lens frame with a third engaging portion to engage with the first engaging portion, a lens barrel, a first guide element, a second guide element, at least one third guide element, an engaging element, and a drive unit. A passive radio frequency identification tag within a Programmable Secure Remote Controller receives a radio frequency signal from a transmitter integrated in the distant equipment. Alternatively, the thin film battery cells may be arranged in a side-by-side configuration. In this manner, the length of connecting leads is shortened and heat and noises generated therein are suppressed. The flat connection part is formed with a third louver in the vicinity of the innermost one of the first louvers. A multiple-input-multiple-output combiner may be utilized to perform signal combing; the MIMO combiner may utilize maximal ratio combining to perform signal combining and equalization.