Nordic Semiconductor Radio transceiver 1.9...3.6 V 11 mA : TX @ 0 dBm RX: 12.5 mA 0 dBm 2 MBd QFN-20

Transceiver components in ISM band (2.4 GHz). Low Power Version of nRF2401. Enhanced Shock Burst. MultiCeiver. Very small housing (4 x 4 mm).