The A1101R09A and A1101R09C are surface mount modules with an integrated crystal, internal voltage regulator, matching circuitry and filtering. The A1101R09A has an integral antenna, whereas the A1101R09C utilizes an external antenna through a U.FL connector. The modules operate in the global non-licensed 915MHz ISM/SRD frequency band and are ideal for achieving low power wireless connectivity without having to deal with extensive RF, antenna design and regulatory compliance, allowing quick time to market. The modules are 100% tested to provide consistent performance. The A1101R09A module measures 9x16x2.5mm and the A1109R09C measures 9x12x2.5mm.