Small external antennas protrude outside the product case. They work well for common applications that need good performance as well as a relatively small antenna. They're available in connectorised and permanent-mount styles.
The picture shown is the WRT-MON Series Tamper Resistant Antennas.
The market exit by Linx Technologies Holtek® from the DIP switch device market is being replaced by its robust serial protocol the DS Encoder/Decoder IC, it includes support for the older Holtek® protocol, providing a migration path for the many applications using Holtek® devices, such as the HT640 and HT658.
To aid rapid development, the DS Series Encoder/Decoder is available as part of a basic evaluation system. The system comes with two evaluation boards for benchmarking and prototyping, one with a Linx LR Transmitter and DS Encoder and another with a Linx LR Receiver and DS Decoder.
Each kit comes with two evaluation or development boards for benchmarking and prototyping, each of which is populated with one or more modules. A prototyping area gives you a place to develop circuitry.
To help you get started, each kit also includes antennas and extra modules.
Compared to an evaluation board, a development board has a larger prototyping area and an interface for connecting to a PC.
Linx Technologies, Inc. is comprised of three divisions: Linx Technologies, Antenna Factor, and Connector City. The largest division, Linx Technologies, specializes in hybrid wireless modules, OEM RF products, and interface solutions such as encoder/decoder ICs.
Antenna Factor specializes in cost-effective standard and custom antennas for a wide range of consumer and industrial wireless products.
Connector City provides high quality standard and custom connectors and cable assemblies for volume OEM applications.