2. Operating Instructions
2.1. Working with the OMRON M24/7 Unit
The OMRON M24/7 device is a compact, lightweight monitoring unit typically worn by the patient for 24 hours. The OMRON M24/7 operates with two AA size batteries. The memory is capable of storing more than 600 measurements. Stepwise pressure de ation ensures quality measurements, even if disturbing environmental factors occur. You may nd the battery compartment and the rating label on the backside housing. The serial number is placed on the rating label, however it is also stored electronically in the solid state memory of the device. On the front side of the housing, there is the LCD, the buttons of the device and the name of the device. The device can be connected to the USB port of a PC with an optoelectronic interface. The device has its socket positioned on the opposite side from the cuff connector. Patients can start extra blood pressure readings or mark symptomatic events.
2.2. Using the Buttons
On the front side of the housing, below the LCD, you may nd three buttons: the START button is marked with a triangle, the EVENT button marked by a heart and the DAY/NIGHT button indicated by a crescent moon. If the device is turned on, then every button press is accompanied by a short beeping sound.
START button
EVENT button 
DAY/NIGHT button
Cancel a blood pressure measurement
The patient can interrupt a blood pressure measurement by pressing a button at any time while the cuff is in ated. This will result in immediate fast cuff de ation. Such interruption is limited to the measurement in progress only and has no effect on further operation. This function is available with all three buttons.
Use this function only if the cuff is hurting the patient’s arm.
Manual blood pressure measurement
If it seems necessary, the patient can start an additional, manual blood pressure measurement by pressing the START button for less than 3 seconds. The result with a manual measurement marker will be stored in the memory of the device. Typical causes for this use: dizziness, palpitations (angina pectoris or headache).
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