RS485 wireless extender

The utility model discloses an RS485 wireless extender, and relates to a wireless repeater device. The existing RS485 bus is difficult in wiring, when collecting nodes are scattered, excessive GPRS collectors are required to be deployed, and the cost is high. The RS485 wireless extender is characterized by comprising a casing, a power unit arranged in the casing, a data processing unit, a wireless communication unit, an RS485 bus interface and an indicating lamp, wherein the input terminal of the power unit is connected with electric supply, and the output terminal is connected with the data processing unit, the communication unit and the RS485 bus interface, so as to provide direct current; the data processing unit is connected with the communication unit, the RS485 bus interface and the dedicating lamp; a main node RS485 wireless extender is connected with a slave node RS485 wireless extender through the wireless communication unit. The technical scheme solves the problem of RS485 ammeter on-load ratio of t