This is a miniature module of Narrow Band Transmitter and Receiver UHF Radio which is used to be applied in vehicle telemetry systems, wireless networking, wireless security system and panic attack
facility. Both modules are ideal for use in portable battery powered
wireless applications since its small size and low power requirements.
The circuit diagram
shows how the FM narrow band transmitter and receiver modules can
easily be integrated into a system to form a wireless link. In the
datasheet you may find transmitter and receiver connection diagram, pin description, functional description, frequency channels, and the design and positioning of the antenna.
Completed description about Narrow Band Transmitter and Receiver UHF Radio Module can be download in this pdf datasheet (source: rfsolutions.co.uk).