Mikroe ISM RX 3 Click features the Maxim Integrated MAX41470 high-performance, low-power receiver. It's ideal for amplitude shift-keyed (ASK) and frequency shift-keyed (FSK) data. The device is configured for three sub-1GHz bands using an onboard 16MHz crystal: 287MHz to 320MHz, 425MHz to 480MHz, and 860MHz to 960MHz. It's fully programmable through an SPI interface. The receiver has excellent RF sensitivity and long-range, allows input signals up to 0dBm of power at the RF input. The board features a fully programmable, self-polling (duty cycling) mode with preamble detection and interrupt output to wake up an external MCU.