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Intended use

The product consists of two main parts, a PIR motion detector and a wireless receiver to be installed in the 
spy hole monitor, Item No. 754139). The PIR motion detector activates the spy hole via the wireless receiver, 
so that it can create a picture of the visitor.
Always observe the safety instructions and all other information included in these operating instructions.
This product complies with the applicable National and European requirements. All names of companies and 
products are the trademarks of the respective owner. All rights reserved.

Package Contents 

1  PIR movement sensor
2 Bracket
3   Wireless receiver to be installed in 

the spy hole monitor

4   Two batteries type AA/Mignon 

for the spy hole monitor

5   Locating screw for the mounting 

of the PIR motion detector to the 
retainer.

Furthermore:
•  Operating instructions of the manufacturer in English and illustrations for installation.
• Quick guide

Safety Instructions

   The warranty will be void in the event of damage caused by failure to observe these safety 

instructions! We do not assume liability for any resulting damage.

 

 We do not assume any liability for material and personal damage caused by improper use 
or non-compliance with the safety instructions. In such cases, the warranty will be null 
and void.

 

•   The unauthorised conversion and/or modi

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 cation of the product is not permitted for safety and 

approval reasons (CE). Never take the product apart (except for the procedures described in 
these operating instructions).

 

•   The product is not a toy and must be kept out of the reach of children. It should be operated 

out of the reach of children.

 

•   Operating the PIR motion detector is possible indoors and outdoors.  Don’t operate the 

product in or under water as this may destroy it!

 

•   Do not leave packaging material carelessly lying around since it could become a dangerous 

plaything for children.

 

•   Handle the product with care, it can be damaged by impacts, blows, or accidental drops, even 

from a low height.

General information on batteries/rechargeable batteries

•  Batteries/rechargeable batteries do not belong in the hands of children.
•   Do not leave batteries/rechargeable batteries lying around; they could be swallowed by children or pets. If 

swallowed, consult a doctor immediately.

•   Leaking, or damaged batteries/rechargeable batteries, in contact with the skin can cause acid burns, 

therefore, use suitable protective gloves. 

•   Batteries/rechargeable batteries must not be short-circuited, opened or thrown into a 

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 re. There is a risk of 

explosion!

•   Do not recharge normal, non-rechargeable batteries, risk of explosion! Only charge rechargeable batteries 

that are intended for this purpose; use a suitable battery charger.

•  Never mix disposable batteries with rechargeable batteries, use either or.
•   Do not mix batteries/rechargeable batteries with different charges (e. g. full and half-full batteries/recharge-

able batteries). 

•  Always replace the complete set of batteries/rechargeable batteries.
•   Check that the polarity is correct, when inserting the batteries/rechargeable batteries (pay attention to 

plus/+ and minus/-).

Getting Started and Mounting

•  Open the battery compartment cover, on the back of the sensor.
•   Insert two batteries type AA/Mignon poled correctly into the battery compartment (see illustration in the 

battery compartment).

•  Close the battery compartment. 
•  Detach the spy hole monitor from its retainer (by rotating it 

slightly counterclockwise). 

•  Remove the battery cover from the spy hole monitor.
•   Plug in the wireless receiver on the upper side of the spy hole 

monitor, see illustration on the right side.

•   Put the battery compartment cover back on by snapping it in.
•  Put the spy hole monitor on its retainer and lock it.
•   Look for a proper position for the PIR motion detector. The front side with the sensor should be directed to 

the area in front of your door, so that the spy hole monitor can create pictures of your visitors. 

  D1*: The PIR range is approximately 3 to 5 m. 
   D2*: The wireless range between the PIR motion detector and the 

wireless receiver is approximately 5 m, depending on the mounting 
place.

   A1*: The acquisition angle of the PIR motion detector is approxi-

mately 60°.

•  You will 

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 nd a double-sided adhesive tape on the bottom side of the 

retainer, so that you can very easily 

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 x the retainer (on 

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 rm, stable 

underground). 

   If you wish to mount the PIR motion detector more durably on walls 

and so on, you can also screw the retainer. Therefore, you will 

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 nd 4 

screw holes on the bottom plate of the retainer.

   Pay attention that no cable or pipes are damaged when 

drilling and tightening the screws!

•   Insert the PIR motion detector into the retainer and attach it there 

using the supplied 

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 xing screw.

•  Align the front side towards the area in front of your door.

PIR sensor features 

The PIR motion detector responds to temperature changes within the detec-
tion range, e.g. if a person with a different temperature from the detection area 
enters the detection area.
When the PIR motion detector recognizes a temperature change within the 
detection range, the LED lights up red.
When the LED 

fl

 ashes red, the batteries are low and should be replaced by 

new ones.

Replacing the Battery

   Because of the lower voltage provided by rechargeable batteries (battery = 1.5 V, rechargeable 

battery = 1.2 V) and their lower capacity, the battery life is shorter. For this reason, we recom-
mend the product be only used with high-quality alkaline batteries to ensure a long and safe 
operation.

•  Remove the PIR motion detector from the retainer by rotating the 

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 xing screw.  

•   Open the battery compartment on the backside and replace the used batteries by two new batteries type 

AA/Mignon  (ensure right polarity).

•  Close the battery compartment.
•   Insert the PIR motion detector back into its retainer and screw the 

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 xing screw tightly. Align the PIR motion 

detector correctly.

Maintenance and Cleaning

The product is maintenance free, therefore you should never open or dismantle it (except to change the 
battery as described in this operating instruction).
Use a clean, dry, soft cloth for cleaning. Do not use aggressive cleaning agents as these can cause 
discolouration. 
Do not press too strongly on the surface when cleaning, to prevent scratch marks.
Dust can easily be removed using a clean, long-bristle brush and a vacuum cleaner.

Disposal

a) In general

   Dispose of the unserviceable product according to the relevant statutory regulations!

b) Disposal of used batteries/rechargeable batteries

As the end user, you are required by law (Battery Ordinance) to return all used batteries/rechargeable bat-
teries; disposing them in the household waste is prohibited!

   Contaminated batteries/rechargeable batteries are labelled with these symbols to indicate that 

disposal in the household waste is forbidden. The symbols for the relevant heavy metals are: Cd 
= Cadmium, Hg = Mercury, Pb = Lead. 

You can dispose of your used batteries/rechargeable batteries free of charge at your community’s collection 
point or any place where batteries/rechargeable batteries are sold!
You thus ful

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 l the legal requirements and contribute to protecting the environment!

Technical Data

Power supply .......................2 batteries of type AA/Mignon
PIR detection angle .............60°
PIR range ............................3 – 5 m
Transmission frequency.......2.4 GHz
Wireless range .....................5 m
Dimensions ..........................66 x 90 x 24 mm (W x H x D, without retainer)
Weight .................................approx. 56 g (without batteries)

Declaration of Conformity (DOC)

We, Conrad Electronic, Klaus-Conrad-Straße 1, D-92240 Hirschau, hereby declare that this product 
conforms to the fundamental requirements and the other relevant regulations of the directive 1999/5/EC. 

  The Declaration of Conformity for this product can be found at www.conrad.com.

 

   O P E R A T I N G   I N S T R U C T I O N S   www.conrad.com

Sensor for the spy hole monitor 

 Item no. 75 41 38

 Version  12/12

  

   These operating instructions are a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1,  

D-92240 Hirschau (www.conrad.com). 

 

 All rights including translation reserved. Reproduction by any method, e.g. photocopy, micro

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 lming, 

or the capture in electronic data processing systems require the prior written approval by the editor. 
Reprinting, also in part, is prohibited. 

 

 These operating instructions represent the technical status at the time of printing. Changes in         
technology and equipment reserved. 

 

© Copyright 2012 by Conrad Electronic SE.

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