The ECG 5 Click Board™ can be used for the development of ECG and Heart-Rate (HR) applications. The Click Board™ features the AD8232, an integrated bio-signal front end. This IC has many features necessary for providing accurate ECG measurements, including a very high common-mode rejection ratio, high gain with DC blocking capability, adjustable high-pass and low-pass filters, integrated right leg drive (RLD), etc. Electrodes presence detection pin helps to reduce the overall power consumption, as it can be used to set the standby mode of the host MCU. The fully conditioned bio-signal is available at the analogue output to be sampled by an external A/D converter.