We have made an effort to investigate thoroughly the coupled behavior of a spatio-temporal system of two limit cycle electrochemical oscillators (Fe/H2SO4) in the absence and presence of a metallic plate (using copper and platinum). The oscillators exchange information via the common electrolyte solution and the magnitude of information exchange varies with the distance (d) between the oscillators, i.e. the lesser the d the more will be the coupling strength and vice-versa. The presence of metallic plate between the working electrodes (Fe) enhances the magnitude of potential distribution in the solution which leads to the increase in entrainment area, i.e. the product of distance between the oscillators d and their parameter mismatch. To explain the experimental findings numerically, the pulse coupling mechanism based on the delta function (Kronecker) has been introduced. (C) 2016 Elsevier B.V. All rights reserved.