DESi MIDLINE User Manual Download Page 2

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MIDLINE

Closed

Lock

I. USAGE of ALARM SYSTEM

a. Arming:

 If you press “Closed Lock” button, a warning tone will be 

heart and system will be armed in 10 seconds. If you want to arm the 
system without any warning tone, you should press “silent” button.

b. Disarming:

 If you press “Opened Lock” button, three warning tone 

will be heart and system will be disarmed. 

c. Panic Alarm

: In case of an emergency, press “panic” button to 

trigger the siren immediately (either the system is armed or 
disarmed). To stop siren, press “opened lock” button.

d. Partial Arming:

 If you press “Closed Lock” and “silent” buttons one after the other, system 

will be armed while the only active sensor is the one which enrolled the system first. The rest of 
the sensors will be inactive. If you install the first sensor to the enterance door, than you can 
use your alarm while you stay in the place which alarm is covering.

II. SYSTEMS FEATURES
a. Remote Controller: 

Rolling code 434 Mhz empowered by a 2032 type lithium battery.

b. Battery Backup: 

Battery backup for power cuts. Empower system up to 12 hours.

c. Capacity:

 It can learn up to 8 wireless sensors and 6 remote controllers. It is compatible with 

wireless motion detectors, wireless magnetic switches and wireless shock sensors which are 
manufactured by DESi.

d. Sabotage Alarm: 

If the central unit or sensors are opened, the system gives sabotage alarm 

either it is armed or disarmed.

Opened

Lock

Silent

Panic

III. SETTINGS

a. Enrolling New Remote Controller
1. 

Open the central unit by removing front cover.

2.

 System will trigger the sabotage siren. push the sabotage 

switch with your hand and deactivate the siren by pressing 
“opened lock” button of the remote controller. Do not release 
the sabotage button.

3.

 Remove the transperant cap which covers the electronic card 

of central unit. Press BT button for 2 seconds.

4.

 Press “Closed Lock” button of THE NEW REMOTE 

CONTROLLER which you want to enroll to the system. Three 
warning tone will be heart.

5.

 Place the transparent cap and the main units cover.

b. Enrolling New Sensor

Electronic card of

Midline Central Unit

Transformer

Trans

former

Fuse

Connectors

Connec.

IC

Button

BT

(Repeat the steps from 4 to 7 for every sensors you want to enroll to the system.)

1. 

Open the central unit by removing front cover.

2.

 System will trigger the sabotage siren. push the sabotage switch with your hand and 

deactivate the siren by pressing “opened lock” button of the remote controller. Do not release 
the sabotage button.

3.

 Arm the system by pressing “Closed Lock” button of the remote controller and wait 10 secs.

4.

 Remove the transperant cap which covers the electronic card of central unit. Press BT 

button for 2 seconds. Do one of the followings according to the sensors you want to enroll: 
 

Motion Detector (PIR): Press sabotage switch of motion detector.

 

Magnetic Switch: Trigger the switch by using magnet.

 

Shock Sensor: Apply shock to the sensor till it triggered.

5.

 If the central unit’s siren is triggered, that means related sensor is enrolled to the system. 

Press “open lock” button to disarm the system.

6.

 Place the transparent cap and the main units cover.

c. Resetting The System (Clearing all the sensors and remote controllers in the memory) 

If you press the BT button more than 10 seconds, system will reset itself by clearing its remote 
controller and sensor memory. After that, you need to enroll remote controllers (first) and 
sensors to the system.

IV. INSTALLATION

a. Installation of The Central Unit:
1.

 Open the central unit by removing front cover. Hold down the sabotage switch.

2.

 Put the device to the place you want to install and mark the wall through the installation 

holes. 

3.

 Drill the marked points and put suitable dowels into the holes.

4.

 Take power (220 V AC) to the same place. (2x 0,50 cable is enough.)

5.

 Screw the central unit to the wall by using installation holes.

6.

 Remove the transparent cap. Connect the power cable to the proper connectors and install 

the transparent cap.

7.

 Connect the internal battery cables. Watch the colors of cables and battery terminals. The 

cables should connected to the same color terminal of batter.

8.

 Install front cover. If sabotage alarm is triggered, you can stop with remote controller.

b. Installation of Wireless Magnetic Switch:
1.

 Remove the scew on the side of sensor and open the cap.

i

WARNING 

Installation requires professional knowledge like drilling, electrical 

connection etc. We recommend you to call your dealer for a professional installer.

2.

 Remove the electronic card carefully.

3.

 Screw the plastic base on to the frame of the door / 

window as the small triangle looks to the floor. Place the 
electronic card carefully. Close the cap and screw.

4.

 Screw the magnet to the door as it will be next to magnetic switch while the door is closed.

5.

 If the device is intalled in a proper way, the led will blink when the door is opened.

MAINTENANCE

- You can clean the parts of system with a dry fabric.
- We recommend you to replace internal battery of central unit once in two years and battery 
of sensors once in three years.

WARNINGS
1.

 The central unit is weather proof. Protect all the parts of system from direct water.

2.

 The distance between magnetic switch and magnet should be at most 1 cm.

3.

 Cut the power by open-circuit the fuse before installation and do not close-circuit the fuse 

before you finish everything and close the front cover of central unit. Otherwise there would be 
unwanted accidents due to electricity.

4.

 Siren is a high volume sound which may damage your ears. Use protection during installation.

Gap between
sensor and
magnet should
be

AT MOST

1 CM

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