The new ATL90 series Embedded PLC modem series is based on the Direct Sequence Spread Spectrum Technology. The new technology in Power Line Carrier (PLC) communication is well known for its high immunity to electrical noise persistent in the power line. With the new solution, the form factor of the PLC modem is further reduced and its cost lowered.

The Embedded PLC Modem is in the form of a ready-to-go circuit module, which is capable of transferring data over the power cable at the low voltage end of the power transformer of a 3-phase/ 4-wire distribution network. A pair of Embedded PLC Modems connected on the power line can provide low speed bi-directional data communication at a baud rate of 300/600 bps. It is built in a small form factor that can be easily integrated into and become part of the user's power line data communication system.

The modules provide bi-directional half-duplex data communication over the mains of any voltage up to 250v a. c., and for frequency of 50 or 60 Hz. Data communication of the modules is transparent to user's data terminals and protocol independent; as a result, multiple units can be connected to the mains without affecting the operation of the others. The use of DSSS modulation technique ensures high noise immunity and reliable data communication. There is no hassle of building interface circuits. Interface to user's data devices is a simple data-in and data-out serial link. It has a built-in on board AC coupling circuit, which allows direct and simple connection to the mains. Applications of the Power Line Modem include status monitoring, control and data communication of devices connected on the power line, such Home Automation, Lighting Control, HVAC control, Low Speed Data Networks, Automatic Meter Reading, Signs and Information Display, Fire and Security Alarm, and so on.