A novel design scheme of wireless sensor networks node for electric equipment temperature-measuring in gas isolate switchgear is presented.In order to reduce the power consumption

shrink the size

lower the cost

improve the dependability and life span

and shorten the circle of developing of the node

programmable system on chip（PSoC） is used as the processor of the processor module in the design of wireless sensor network node.The hardware and software implementation of node is introduced in detail.The test results are given which show that the sensor system has good property.