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Function

Byte

0

1

2

3

4

5

6

7

8

9

Bit

7-4

3

2

1

0

START

0xC

Tamper:

1 - opened

0 - close

Battery:

1 - low

0 - OK

reserved

Alarm: 

1 - alarm 

0 - OK

FW version

Run time[0]

Run time[1]

Temperatur

e [0]

Temperatur

e [1]

Humidit

y [0]

Humidit

y [1]

Illuminanc

e [0]

Illuminanc

e [1]

HEARTBEAT

0x0

0x00

ALARM

0x6

alarm message number 

(01 - XY)

ALARM__CANCELED

0x4

alarm clear fl ag 

0x00 - smoke cleared, 

0x01 - button pressed , 

0x02 detector inserted in 

to the base

TEST

0x2

test result

Notes

Unit

Example

Temperature [°C] * 10

00F5 = 245 = 24,5 °C

Humidity [%] *10

01A1 = 417 = 41,7 %

Example

Message example

Byte

04 00 00 48 00 54 01 25

04

Message type and fl ags - fi rst digit defi ne message type according to the table ( 0 is heartbeat ) and second digit 
defi ne fl ags of battery, tamper and smoke alarm - 4 Hex is 0100 binary so according to the table the battery is low

00

Value according to the message type - in this case message type is Heartbeat so byte don´t have useful value

00

Run time in hours - 0 * 256 hours 

48

Run time in hours - 48 Hex is 72 decimaly so the run time is 72 hours 

00

Temperature - 0054 Hex is 84 decimaly so the temperature is 8.4 °C

54

01

Humidity - 0125 Hex is 293 decimaly so the humidity is 29.3 %

25

To ensure proper operation, it is advisable to keep the detector clean.

• 

At least once every 6 months, clean the surface using a soft brush or cloth. Using a brush-
less vacuum cleaner, carefully clear the cover and the ventilation holes from dust and 
dirt.

• 

Never use water, detergents or solvents. The detector may be damaged.

• 

Do not use any chemicals near the device (such as cleaning products, hair spray ...) fumes 
can adversely affect the function of the device.

• 

Do not apply colour to the detector. When painting, remove the detector and return to 
the location after the work has finished.

• 

Do not disassemble the detector; do not attempt to clean the inside of the detector.

• 

After every cleaning, test the detector!

• 

If you do not use the detector for a long time, remove it, remove the batteries. Wrap the 
detector and store it in a cool, dry place.

Maintenance and cleaning

Replacing batteries

1. Rotate the detector counter clockwise and remove it from the base.
2. Remove the original battery and insert new batteries into the battery holder. Beware of 

polarity. The red LED on the detector will blink.

3. Attach the detector to the base so that the projection on the base faces the tamper posi-

tion in the detector cover. Turn the detector clockwise.

4. Press the test button to test the correct alarm function (see Test Detector). WARNING - 

do not damage the test button during battery replacement, the device may not work 
properly.

Notice:

Only use batteries designed for this product correctly inserted in the device! Immediately replace 
weak batteries with new ones. Do not use new and used batteries together. If necessary, clean the 
battery and contacts prior to using. Avoid the shorting of batteries! Do not dismantle batteries, do 
not charge them and protect them from extreme heating - danger of leakage! Upon contact with acid, 
immediately rinse the aff ected area with a stream of water and seek medical attention. Keep batteries 
out of the reach of children. Batteries must be recycled or returned to an appropriate location (e.g. 
collection container) in accordance with local legal provisions.

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