When a sensor receives the information about an event, it starts cross-lookup in order to find the closest actuator, by sending search messages in vertical and horizontal directions (iMesh lookup).In the second stage, when an actuator is found, it starts an auction to look for a better actuator to act upon the event. Instead of using the centralized auction or localized simple auction protocol for multi-hop networks [5], we use the localized auction aggregation protocol. It is a protocol based on flooding the neighboring actuators with a service request. In the localized simple auction protocol, each of the actuators responds with the offer to provide service, and give the cost of doing it. It is not a good solution for bigger networks as it has a big latency, even if the collector is located near the event location. Here we use the localized auction aggregation protocol (k-SAAP) proposed [3] as a way to further lower the number of messages.