NRF24L01 is a 2.4GHz band transceiver with auto-acknowledge and auto-retransmit capabilities, supporting up to six channels of data. NRF24L01+ Module features a high-performance wireless data transmission chip with increased PA and LNA, RF switches, band-pass filters, and full bidirectional RF functionality, significantly extending the effective communication range. The NRF24L01 module has 5V tolerant inputs, allowing direct connection of SPI pins. Wireless Module includes an SMD LED indicator; onboard 3.3V voltage regulator accepts 5V supply and provides 3.3V for the attached nRF24L01+ module. Widely used in wireless remote control, somatosensory devices, RFID, smart grid, and wireless o applications. Specification: PA Gain: 20dB LNA Gain: 10dB Frequency: 2.4GHz ~ 2.5GHz Range: 800+ meters line of sight Multi-frequency: 125 channels Transmit Operating Current (Max): 115mA Receiving Operating Current (Max): 45mA Operating Voltage: 3 ~ 3.6V (Recommended 3.3V) Color: Black Material: Plastic + Metal Package Contents: 2 x NRF24L01+PA+LNA Wireless Transceiver RF Transceiver Module 2 x Antenna 2.4G 1100m 2 x NRF24L01 Wireless Module Breakout Adapter Note: Light and display differences may cause slight color variation from the actual item. Measurement error allowed is +/- 1-3cm.