Parameter Circuit board size:15mm (0.59'') wide x 41mm(1.61'') Antenna dimensions (when angled at 90 degrees):108mm(4.25'') heightx9mm(0.35'') diameter; NRF24L01: Single-chip radio transceiver for the 2.4-2.5 GHz ISM band worldwide. For Arduino and for Raspberry PI. Range: line of sight above 800 meters; 5V tolerance input; Frequence: 2.4GHz~2.5GHz; Operating voltage:3~3.6V Max The NRF24L01 is a 2.4GHz ISM band transceiver. The module may be connected directly to the SPI pin. On-chip voltage regulators accept supply voltages from 1.9 to 3.6V. Allows the SPI pins to be connected directly to your product. The module includes an Interrupt request (IRQ) pin that can be used to wake the host microcontroller from sleep when the module receives a transmission,this can save battery power. Package Included: 2 X NRF24L01+PA+LNA Wireless Transceiver RF Transceiver Module; 2 X SMA Antenna;

?Package Includes:2 NRF24L01+PA+LNA Wireless Transceiver Module and 2 SMA Antenna. ?Application:For wireless communication between modules,wireless peripherals, remote control systems, wireless voice transmission, wireless sensor networks,smart home. ?Feature:High transmission efficiency and stability,with auto-acknowledge and auto-retransmit,support up to six channels of data reception. ?Range: 800+ meters line of sight;5V tolerant inputs;. ?NRF24L01:A single chip radio transceiver for 2.4-2.5 GHz ISM band.For Arduino and for Raspberry Pi.