2.4 GHz Wireless RF Transceiver Module, DIP-8, 5mW, 7dBm, 150~240 m, PCB Antenna, Compatible with nRF24L01+, Pack of 4

Found module only marginally stable. Others have commented that the NRF24 module that plugs into this voltage regulator/breakout module needs a bypass capacitor on the power supply terminals. It shouldn't need that if it has a solid power supply. The schematic for this module, which supplies that power, shows the input and output of the 3.3V voltage regulator bypassed with 10uF capacitors to ground, as required by the regulator data sheet. The capacitors are present on this board (though they are only 6.6uF), but they are not connected to ground. They are connected to a little plated-through hole, which should go to ground, but doesn't. The stability problems can be corrected by making the missing connection with a piece of wire from the orphan hole to the ground on the board; then the NRF24 board that plugs into this board won't need additional bypassing.With that correction, the board works fine.

These modules work great. No problems or incompatibilities that I've come across. Will purchase again.