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                 Available from A1 Security Cameras 

    www.a1securitycameras.com email: [email protected]

Ceiling Mount 
PIR Detector with Self-Test 

DS938Z 

en  Installation Guide 

Bosch Security Systems, Inc. product manufacturing dates 

Use the serial number located on the product label and refer to the Bosch 
Security Systems, Inc web site at: http://www.boschsecurity.com/datecodes/. 

© 2013 Bosch Security Systems, Inc. 130 Perinton Parkway Fairport, NY 14450 

Summary of Contents for DS938Z

Page 1: ...ctor with Self Test DS938Z en Installation Guide Bosch Security Systems Inc product manufacturing dates Use the serial number located on the product label and refer to the Bosch Security Systems Inc web site at http www boschsecurity com datecodes 2013 Bosch Security Systems Inc 130 Perinton Parkway Fairport NY 14450 ...

Page 2: ...tween 13 and 18 ft 4 0 and 5 5 m high use the optical module marked AR13 18 3 To replace an optical module push the optical module tabs towards the center until the module snaps free of the circuit board Holding the new module by the tabs snap the new module into place NOTICE When replacing the mirror make sure it is facing the same direction as before it was removed 4 Replace the enclosure onto t...

Page 3: ...trusion detector It is equipped with advanced PIR detection and supervision circuits and is designed to provide an alarm condition upon detection of an intruder passing through its area of coverage Employing balanced dual opposed sensing elements the DS938Z passive infrared PIR detector makes use of the fact that all objects give off emit infrared energy and that the warmer an object is the greate...

Page 4: ...ance 6 3 Coverage Margin Again walk across the farthest edge of required coverage A minimum voltage change of 1 0 VDC from the reference level is required in the wintertime when the background temperature is cool This will make up for summertime when the background is warmer If testing the unit in the summertime the minimum recommended voltage change is 0 75 VDC When testing is completed remove th...

Page 5: ...Sonalert if installed first turns on may be mounted to standard 4 inch octagonal or square electrical boxes 7 Walk test the unit from all directions to determine the boundaries 8 After completion of the walk tests remove the Sonalert if installed NOTICE 6 Final Tests The DS938Z base will not completely cover a 4 inch square box Where aesthetics are important a 4 inch octagonal box is recommended 6 ...

Page 6: ...nsitivity mode High Sensitivity The setting for fast response to intruder signals For use only in extremely quiet environments where ceiling drafts and thermal and illumination transients are not anticipated If both switches are in the OFF position the unit will default to the intermediate setting NOTICE Although the sensitivity modes provide different degrees of tolerance to environmentally cause...

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