Circuit Design developed the data transceiver LMD-400-R, designed for use under the European Land Mobile Service specification EN 300-113 and Private Land Mobile Services FCC Part 90 in the U.S. market. This synthesized transceiver with 10 mW RF power, 4800 bps data rate and GFSK modulation, combines high receiver performance with narrow band transmission and offers high resistance against interference. It is a simple, compact, low-power OEM transceiver module suited for integration in user systems. Three frequency versions are available: 438-442 MHz, 458-462 MHz and 458-462.5 MHz. It fulfills frequency stability requirements in a 12.5 kHz channel spacing system.