Process Automation Controls meets Wireless!

The KWJ-WSN Serial MODBUS Gateway (SMG) acts as a data concentrator for KWJ-WSN wireless sensor networks. This device allows you to connect up to 100 wireless sensing devices, per gateway, to your existing serial MODBUS RS-232C and RS-485 sensing and control infrastructures.

KWJ Engineering has recognized the importance of using open standards like MODBUS, allowing KWJ-WSN wireless sensors to be used in the majority of industrial applications. Modbus is often used to connect a supervisory computer with a remote terminal unit (RTU) in supervisory control and data acquisition (SCADA) systems. Modbus allows for communication between many (approximately 247) devices connected to the same wired network. Therefore, KWJ-WSN SMG’s allows for seemingly unlimited wireless expansion of a traditional wired network.

A system incorporating a KWJ-WSN SMG would consists of the the following:

• MODBUS Master – PLC, SCADA, etc.

• Existing RS-232C or RS-485 Infrastructure.

• KWJ-WSN Serial MODBUS Gateway (SMG).

• KWJ-WSN Wireless Sensors


Works with KWJ-WSN 900, 868 and 433MHz
Sensor Networking Solutions
Communicates with MODBUS RTU / ASCII Serial Protocols
Supports RS-232C / RS-485 Interfacing
LED Status Indicators
NEMA 4X / IP65 Rated Enclosure
RP SMA Antenna Connector
(Antenna Included)


Process automation protocols
Industrial control system protocols
Building automation protocols
Power system automation protocols
Automatic meter reading protocols
Automobile / Vehicle protocol buses
In any existing MODBUS system

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