The A2500R24C and A2500R24A are surface mount modules with an integrated crystal, internal voltage regulator, matching circuitry and filtering. The A2500R24A has an integral antenna, whereas the A2500R24C utilizes an external antenna through a U.FL connector. The modules operate in the global non-licensed 2.4GHz 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 A2500R24C and A2500R24A modules both measure 9x12x2.5mm and are footprint compatible with each other.