Advantech's Adam-2000Z Series Wireless I/O Modules
Adam-2000Z series wireless I/O modules use IEEE 802.15.4 standard I/O and support 2.4 GHz mesh networking. They include a Modbus RTU gateway, router node, I/O and sensor devices. An internal compartment for two AA alkaline batteries will keep devices updated at 1 min intervals for a year. They can connect up to 32 nodes, including router and end devices.