The MICRF219A and MICRF220 are 300 to 450MHz ISM band superheterodyne, image-reject RF receivers., RF Frequency Range: 300 to 450MHz ISM Band. Receiver Sensitivity: -110dBm @ 1kbps, 0.1% BER. Modulation: ASK, OOK. OTA Data Rate: up to 20kbps. Analogue RSS