This thesis presents a hardware design and implementation of a security system that utilized laser beam mechanism alongside light dependent resistor (LDR) sensor with rechargeable battery powered by constant solar energy. In the market nowadays, a wide range type of laser alarms were available each with unique features and specialties. Unfortunately, most of them came with a staggering price and high maintenance cost. Hence, the idea to invent a reasonable low cost laser alarm system is carry out. The aim of this work is to build an eco-friendly laser alarm system using Light Dependent Resistor (LDR) circuit as an alternative product for current market’s laser alarm systems. It compose of two separate main circuits, the laser unit and LDR sensory alarm unit while applying mirror field as connecting medium. The LDR sensor is controlled using Arduino, where the solar system requires 11 hours of charging with minimum 5% capacity battery. The work built has been successfully implemented.