This paper presents an output consensus problem for low-rate wireless networks under the IEEE 802.15.4 protocol. We consider a multi-agent system with quantized output consensus dynamics in which each agent updates its state according to quantized relative differences of outputs among its neighbor agents. Information exchanges of quantized relative outputs are done by a PAN coordinator through a static and undirected wireless network. We propose a multiple superfranie structure and a non-preemptive GTS scheduling algorithm for an output consensus under the IEEE 802.15.4 protocol. (C) 2015 Elsevier Ltd. All rights reserved.