This brief note examines the characteristics of solar cells from the standpoint of developing a global solar radiation monitor. The study is performed using a simplified photovoltaic test monitor manufactured, a single crystal p-type czochraliski (CZ) silicon solar cell of the construction n+ pp++ passivated emitter solar cell coupled to a fluke 73 digital multimeter. The short circuit current density (Jsc ) is examined during a complete test day from 8:40 AM to 7:40 PM. Subsequently, the test monitor is used for checking the accuracy of transfer operations of solar radiation. The results obtained by the test monitor utilizing solar cells are good due to: (a) it is simple in construction, (b) it exhibits a good response to all solar radiation variations, and (c) it works without an electric power supply.