Disassembling a Blood Pressure Monitor

At the end of the product life cycle, a product that accompanied me for several years - the Medisana BPM1 "Cardio Dock" - which served primarily as a charging station with a 30 PIN to Lightning adapter for charging and standing for my smartphone, was the opportunity to open and view the installed components.

Even with internet research it is not yet clear to me what was built in there: I hope for your comments ;-)

Please look through the pictures and let me know what you recognize:

The Summit VS-LM05 is certainly also very interesting and also the round copper something, but here I find it a little difficult to provide information. My only find was in russian, of which I am not proficient. It suspects that the VS-LM05 is a special magnet for BPM.

Let's test the pump: Skoocom also had the data sheet here. Already with 2x AA batteries it foamed my remaining tea with ambient air. At 6V and 200mA a storm would have been triggered in the cup, which I have not tested.

Rated voltage: DC6.0V / DC12.0V / DC24.0V
Rated current:＜430mA / ＜300mA / ＜150mA
Inflation time: <10 S (From 0 to 300 mmHg in a 500CC tank)
Air flow: >1.8L/min
Pressure: >500mmHg
Leakage: ＜3 mmHg/min from 300mmhg at 500CC tank.
Noise: 52dB (30 cm away)
Apply for: Air
Life: >50, 000 TimesEnvironment: 0～50 ℃，75% RH

According to information from Skoocom, the pump can be supplied with PWM control on request. The pump strength is usually regulated by varying the DC current supply. A Fading on an Arduino PIN probably did not lead to success because of the current consumption: 200mA cannot provide a PIN, so that the fading effect was noticeable on the motor itself, but not on the air output power.

int pumpPin = 9;
void setup() {
// nothing happens in setup
}
void loop() {
// fade in from min to max in increments of 5 points:
for (int fadeValue = 0 ; fadeValue <= 255; fadeValue += 5) {
// sets the value (range from 0 to 255):
analogWrite(pumpPin, fadeValue);
}
}

As a field of application for the pump I think of blowing out radiators or crumbs in PC keyboards.

Do you know what the summit vs-lm05 and the round copper component are?