K-Rain 3100-BRIDGE Bridge WiFi Module for PRO LC. The Bridge WiFi Module is used with the PRO-LC WiFi Ready Irrigation Controller. It turns the PRO-LC WiFi Ready Irrigation Controller into a wireless one. You will be able to manage the PRO-LC Irrigation Controller through the PRO-LC mobile app. The Bridge WiFi Module is required for control from a Smartphone, tablet, or computer for the K-Rain Pro-LC WiFi-Ready Irrigation Controller.