ChipSilicon provides RF Transceiver based communication platform for security and automation systems
 

RF Transceiver modules can be integrated with embedded products. RF transceivers allow embedded products to communicate in short distances specified by the RF frequency and environment with other RF capable devices.

e.g. a Central control panel can communicate with a remote alarm in the same premises through RF transceivers to give alarm signal. This ensure that wiring related problems do not exist in case of emergency.
Note: We are not working in RF transmitters and RF receivers as separate products. We are working only in RF Transceivers which are used in specialized applications only. Hence if you are exploring RFID or RF tags/readers you should look elsewhere.