E-Z Flush Sensor Flush Valve Retrofit Kit allows you to go from handle-operated to a hands-free operation in fewer steps. Each automatic sensor flush valve retrofit kit install takes just 3 minutes and all the tools and instructions come included. Universal design works with most models. Once retrofitted, the automatic flush valve's precise sensor detects the user with perfect timing and without wasting water. The 3 year battery life offers uninterrupted performance, suitable for most commercial restrooms.