NRF24L01 plus MultiCeiver Wireless Module
The nRF24L01 is a highly integrated, ultra low power (ULP) 2Mbps RF transceiver IC for the 2.4GHz ISM (Industrial, Scientific and Medical) band. With peak RX/TX currents lower than 14mA, a sub µA power down mode, advanced power management, and a 1.9 to 3.6V supply range, the nRF24L01 provides a true ULP solution enabling months to years of battery lifetime when running on coin cells or AA/AAA batteries.

up to +4 dBm (transmitting Range = 100m)

2.4 - 2.5 GHz, 125 Selectable channels Onboard antenna.

15 x 29 mm PCB with PIN connectors.