Electricity is one of the important sources for every human being. In this modern age, people are more interested in products that are used automatically in their lives. Many users of washing machine in dorm often forget to make sure their cloth on washing machine taken. As a result of this problem, there is an idea to produce a product that is Smart Monitoring System for Washing Machine. Smart monitoring system for washing machine were building because the problem that student faces when wash the clothes at washing machine. The students at hostel have to wait another user of washing machine takes out their clothes after wash it. Then, the students do not have something that alerted them about the status of washing machine. Since the washing machine which is existing on the hostel cannot give something that easier them to get info about the use of washing machine, this project can make an alarm to alert the user to take their cloth after wash and another user can use it after seeing the bulb turned on and buzzer were ringing. Programming is used to set the time and relay as the switch is programmed Arduino, this software is a method umtul write a program construction software system has to provide some programs for each component, but will need to download some libraries needed by each component has a library distinctive, After-phase combination of electronics and electrical circuit is completed, the construction program has been made, so that they become a complete program that involved components to function properly. The results showed that four key characteristics of effective, easy-owned, user-friendly, simple and safe high scalability of this product to be applied.