Welch Allyn Connex ProBP 3400 digital blood pressure device - User Manual - Manual (Page 41)

Standby mode
The standby mode conserves battery power. The display goes black, then enters standby mode
two minutes after a reading or last button pressed.
Press any button to bring the ProBP 3400 out of Standby Mode.
If disconnected from an external power source, the ProBP 3400 automatically powers off when not
used for 30 minutes. When the device is connected to external power, the device will automatically
power off after three hours of non-use.
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