The AMB2621 is an ultra-low power Bluetooth Smart (v4.2) wireless module based on the nRF52832 Nordic SoC and an ARM CortexTM-M4F CPU with flash memory. The module requires a 1.7 to 3.6 V supply and can deliver an output power of 2 dBm and has a -96 dBm sensitivity. It measures 11 x 8 x 1.8 mm.