Item Type: Adapter module Communication Interface Voltage: Compatible with 5V, 3.3V (onboard 3.3V high-speed level conversion circuit) Working Voltage: 3.2V-5.3VDC (onboard 3.3V regulator) Working Current: 240mA (maximum) 1This is an adapter module dedicated to NRF24L01 + / NRF24L01 + PA + LNA wireless modules. 2Onboard level conversion circuit and 3.3V regulated voltage facilitate the use of NRF24L01 wireless module for 5V single chip microcomputer (such as universal network object R3 motherboard). 3Universal network object R3 and its compatible motherboards can be directly connected and used. 4Wireless transceiver's installation is simple, which not requires particularly complicated operations. 5Built to strict quality control standards, adapter module is made of high quality material with strong durability.1 x Adapter Module