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5

1

Safety Instructions

The unit may only be connected to a protection low-voltage system
with safe electrical separation. The unit may only be opened and
repaired by the supplier. Never touch any electronic components of
the sensor.

4

Displays on the Sensor

Red LED
Recess for fastening 
the sensor
Floor plate
Cable feed-through
DIP switch (addressing)
Key [<]
Key [>]

9

10

11

12

13

14

8

Cover
Plug-in screw terminal
RJ12 PCB socket
Grid for swivelling 
the radar module
Grid for tilting 
the radar module
Radar double field module
Green LED

2

3

4

5

6

7

1

Translation of the original instructions

3.2

Opening the housing

– The sensor must be mounted on a flat surface 

(avoid vibrations)

– The sensor must be protected from rain and snow
– Objects (e.g. plants, flags, fans etc.) must not extend into the detection area
– The sensor must not be obscured by covers/signs
– Fluorescent tubes should not be placed in the immediate vicinity of the detection 

area

3

Installation

3.1

Installation instructions

3.3

Mounting

Affix drilling jig to wall/ceiling and drill holes according to instructions
Route cable through the appropriate opening in the floor plate – 
make sure length is sufficient for wiring
Fasten sensor 
Connect cable (according to type plate or chap. 3.4)
Click cover onto floor plate

2

3

4

5

1

3.4

Electrical connections

Merkur with plug-in screw terminal

Merkur with RJ12 PCB socket

not connected 

green

blue

black

white

red

yellow

Article

Direction recognition
(ES = energy saving)

Connection

Merkur 2 ES
Merkur 2 ES.C
Merkur 2
Merkur 2 C

Yes (can be deactivated)
Yes (can be deactivated)

No
No

Plug-in screw terminal
RJ connector
Plug-in screw terminal
RJ connector

2

Description of the Sensor

1

1

6

12

2

3

14

8

7

5

9

11

10

Green LED

– Indicates parameter or parameter level through 

frequency of flashing (with key configuration)

– Flashes briefly: 

– When key configuration mode is exited
– When the sensor has received the command from 

the remote control

LED red 

Lights up in the event of detection

Green LED

Lights up when SMD is active

BEFORE installation

AFTER installation

brown

blue

black

white

1

2

3

4

5

9

13

2

3

4

5

Start-up phase

Configuration

Operation

Red LED

Lights up during startup for 3 s

4

Green LED

Afterwards, the green LED flashes a few times and indicates the
software version (the sensor is already functional and 
programmable)

Radar Motion Detector as an Opening Sensor for Automatic Doors

DE

EN

FR

219733T

10/18

Merkur

2

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