This part is a kind of semiconductor called RFM23BP.

Function of this product has ISM TRANSCEIVER MODULE.

Manufacturers : HOPERF

Image and pinout :

Some of the text within the PDF file :

R F M 2 3 BP R F M 2 3 BP I S M T R A N S C E I V E R M O D U L E Features Frequency Range 433/868/915MHz ISM bands Sensitivity = –120 dBm Output power range +30 dBm Max (RFM23BP) Low Power Consumption 25 mA receive 550 mA @ +30 dBm transmit Data Rate = 0.123 to 256 kbps FSK, GFSK, and OOK modulation Power Supply = 3.3 to 6 V Ultra low power shutdown mode Digital RSSI Wake-up timer Auto-frequency calibration (AFC) Power-on-reset (POR) Antenna diversity and TR switch control Configurable packet handler Preamble detector TX and RX 64 byte FIFOs Low battery detector Temperature sensor and 8-bit ADC –40 to +85 °C temperature range Integrated voltage regulators Frequency hopping capability On-chip crystal tuning 16-PIN SMD package Low cost V2.0 RFM23BP Applications Remote control Home s [ ... ]

RFM23BP PDF Datasheet Download