The ITM-8639 SIP module is designed for 868MHz ISM band wireless applications using AMICCOM’s A7139 FSK/GFSK transceiver chipset. This compact module features a fully programmable frequency synthesizer by SPI interface. The maximum data rate is up to 100kbps (by using 12.8MHz crystal, or 250kbps by using 16MHz crystal)

ITM-8639 is optimized for very low power consumption. In addition, it can offer a very good link budget with a high efficient class-E power amplifier up to 16dBm and a low phase noise receiver. Therefore, ITM-8639 is very suitable for battery powered application with a nice LOS (line-of-sight) wireless range.