The RFM23BP-433-D is a sub-1GHz ISM/SRD band transceiver module from Hope Microelectronics. This module offers highly integrated and cost-effective solutions for ISM/SRD applications such as home and building automation, industrial controls, alarm systems, remote monitoring and security systems. The transceiver uses an on-chip advanced Frequency Hopping Spread Spectrum (FHSS) and offers improved data rate, extended range and reliable communication in noisy environments. Other features include a high receive sensitivity of -127 dBm, a transmit power of +17 dBm, an output power of up to +17 dBm, up to 128 user-defined channels, fast hopping across channels and high-speed data rates up to 500 Kbps.