A merchandising system that improves the merchandising of product by limiting the number and the frequency with which product can be removed from, for example, a merchandising shelf. The merchandising system may include a base configured to support product and a housing configured to engage the base. The housing may comprise a top wall, a first side wall, a second side wall, and a front retaining wall. The system may further include a spring-urged pusher movably mounted on the base, a locking assembly, and an electronic control unit the triggers the locking assembly, locking the door from opening and stopping the pusher from moving product forward to the door.