The Bluetooth PC ECG devices BT12 and BT3/6 are compact, mains-independent ECG measuring devices. They are for wirelessly transmitting a 3-/6- or 12-channel ECG to a monitor, e.g. a PC or a regular patient monitor. The devices are characterized by their compactness and easy operability. The built-in display signalizes electrode contact problems, heart rate, battery status and telemetry reception. Thanks to the wireless data transmission, the device is particularly suitable for use in telemedicine.