Hardware Installation
6 Andover Controls Corporation
Table 1. Maximum Length Wire for Card Readers
*Model number 30387 for UL listed systems.
Card Reader Type
#18 Gauge
(1.0 mm2)
#22 Gauge
(0.35 mm2)
Sensor Engineering*
500 ft (152 m)
200 ft (60 m)
Proximity (12V at ACX 780)
250 ft (76 m)
100 ft (30 m)
Proximity (12V at Reader)
500 ft (152 m)
350 ft (106 m)
Dorado ABA Card Reader
500 ft (152 m)
200 ft (76 m)
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