Instruction Manual

Forehead Sleep Recorder File No. DMR-SM902-4-25 Ver:A0

7.4.2. Charge

a) Use a Micro USB cable to connect the charging box to a USB interface power source (need

to be equipped on your own).

b) Place the device into the charging box, and the device will automatically be attached. Here

the device indicator is breathing yellow, indicating that the device is charging; green always

on, indicating that charging is complete.

c) Low battery warning: When the power is on, if the power is less than 5%, then the yellow

indicator light flashes quickly.

Figure 9

7.4.3. Power on / off

a) In the off state, press the power button of the device for short time, the green light of the

device is always on, indicating that the device is in the state of being connected to the device.

b) Press and hold the power button of the device for more than 2 seconds. The device indicator

flashes 3 times and then turns off, indicating that the shutdown was successful.

7.4.4. Mobile Terminal Device Connection

This product connects to a mobile terminal via Bluetooth. The steps are as following:

a) Turn on Bluetooth on the mobile terminal (some mobile terminals need to have the

positioning function turned on at the same time).

b) Follow the guidance in the APP, select the Bluetooth number corresponding to the device

label, in the nearby device list.

c) After the connection is successful, the device indicator flashes slowly in green.

d) For connection failure, Refer to Section 8 "Troubleshooting" of this manual.

e) Bluetooth specifications: 4.2BLE, working frequency 2.4000-2.4835GHz, modulation mode

GFSK, automatic frequency hopping, effective distance within 2 meters (or depending on the

specific environment)

7.4.5. Acquisition and operation of APP

Please contact your dealer to get the APP. For detailed installation method and operation guide,

please refer to the APP instruction. The following is an overview of the work flow in the APP.

a） Connect the sleep recorder:

Turn on the sleep recorder, and then launch the sleep recorder APP in the customer's mobile