This sale is for 2 units Wireless Audio Transmitter and Receiver 2.4GHz Long Range Transmitter up to 6km. Will require 2 units for master and slave one at the inverter location and one at the meter location this will save time instead of running RS485 cable from the inverter to the meter ideal for retrofit hybrid inverters. When installing you have to make sure both are set identical and the same setting of the inverter under the RS485 work with Giv energy and Solis hybrid and more type of inverter that require communication with RS485 data transfer
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