The iT20 is a telemetry transmitter that sends heart frequency and pulse data wirelessly to a central network at the hospital. Patients can thus move around freely in the ward during the real-time monitoring process. The SE-2003 recorder with three channels and the SE-2102 with twelve channels register the data. The devices are lightweight, compact and watertight, so that they may be carried in a pocket or worn around the neck, even while in the shower.