The TDA7100 is a low-power ASK/FSK wireless transmitter operating in the 434MHz ISM band.
RF Frequency Range: 427 to 442MHz ISM band RF Output Power: +5dBm Modulation: FSK, ASK OTA Data Rate: 20kbps Power-down mode Power supply: +2.1 to +4.0Vdc Operating temperature range: -20 to +70°C Applications: Wireless remote control, Alarm systems