Electronic security system with two-way communication between lo

Details Electronic security system with two-way communication between lo Electronic security system with two-way communication between lo

1986-08-06

1988-10-18

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

70278, 34082534, 34082569, 34082572, H04Q 100

Patent

active

047790903

ABSTRACT:
An electronic security system having a locked and at least one unlocked state and comprising at least one electronic access controller and at least one electronic key. The electronic security system employs a predetermined, distinctive, first code stored in memories in each access controller and key, and each electronic key stores a predetermined second code consisting of a number part and an associated time delay part. The number parts of all second codes are also stored in the access controller memory.

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