Product Description material: plastic Size: 15x29mm Wide power supply voltage range: 1.9~3.6V, typical 3.3V Average emission current: as low as 25mA (7dBm) Receiving sensitivity: -96dBm@250kbps Maximum transmit power: +71dBm Use interface: four-wire SPI Speed: up to 10MHz Support output: 1bit RSSI Working temperature: -20~85 Colour: Black Quantity: 5 pieces / 10 pieces Package content: 5 pieces / 10 pieces * communication module 1.2.4 GHzNRF24L01 is a single chip radio transceiver for the worldwide 2.4 GHz ISM band. 2.Applications: Wireless peripherals, remote control systems such as RC vehicles and consumer remote electronics, wireless voice transmission such as VoIP, wireless sensor networks, wireless networks, home and commercial automation 3.Dimensions: 15x29mm ,including:built-in 2.4GHz antenna,for easy implementation into designs without additional hardware 4.FunctionAuto-acknowledge and auto-retransmit function 5.Establish radio transmissionWith the help of these NRF24L01 modules, radio transmission between two microcontrollers can be established.