5-5
 
The following test method is suitable for functional checks of sensor bases or QuickConnect 
sensors during installation; however, testing with smoke must be performed to comply with NFPA 
requirements. 
 
For all sensor bases, position the 553-810 Magnet Tester ½” to ¾” counterclockwise from the 
visible LED found on the sensor base, (see the figure below). 
 
For the 4098-9757 QuickConnect2 photo sensor, position the 553-810 Magnet Tester as shown in 
Figure 5-2. 
 
Testing a sensor with a magnet reports a value of 255 for actual / peak (exception 4010 panel,  
4100U panel and  4100ES panel).  Clear the peak value after testing. 
 
Note:  For 4098-9795 and 4098-9796 Multi-Sensor Bases both photo and heat address 
(even and odd) must alarm. 
 
 
 
Figure 5-1.  Magnet Test Location for 4098-9789, -9791, -9792, -9793, and -9796  
                Sensor Bases using 553-810 Magnet Tester 
 
The 4098 photoelectric detectors may be tested by placing a magnet above the location indicated 
by a “” mark embossed on the cover (see Figure 5-2)  for four (4) seconds.  Use the Magnetic 
Tester (Part No. 553-810), Table 5-3, and the following information to test detectors. 
 
Table 5-3 describes the LED reaction during Normal and MAG TEST modes to the Normal,  
More Sensitive, Less Sensitive, and Non-Functional states of the detector. 
 
Continued on next page 
Maintenance and Testing, 
Continued 
Alternate Method for 
Testing Sensors 
Magnetic Test for 
Photoelectric 
Detectors