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UPASS REACH | INSTALLATION GUIDE
Connections
3.5.4 TAMPER SWITCH
An internal magnet provides tamper indication when the service cover is opened.
This contact may be connected to an external alarm system. The contacts are
normally closed when the cover is in place.
Tamper switches of multiple readers can be connected in series.
Connections:
NC
Tamper switch (normally closed)
COM
Tamper switch (common)
Contact ratings:
Max. current
50 mA (0.5 Volt voltage drop)
Max. switching voltage
Figure 21: Tamper switch
+24 VDC
Tamper switch
18/35
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