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Note:It's HC-05 Bluetooth module Slave and master two in one module. Use the CSR mainstream bluetooth chip, bluetooth V2.0 protocol standards. Compatible with bluetooth master module"、slave module"or master-slave(whole) module.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.