Keyloc Card - Mitsubishi Electric LS Pro Hardware Technical Reference

Peripheral items
4.6

KeyLOC CARD

The KeyLOC card is a credit card sized unit which is used in conjunction with the
Apricot LOC Technology software to control access to the computer and the data
stored on it.
The KeyLOC card consists of a plastic case and a small circuit board. The plastic case
is in two halves and contains the circuit board and three small batteries. The case may
be opened in order to replace the batteries, this is done by sliding the two halves apart.
The batteries should be replaced with Duracell 389 or equivalent and should be placed
in the holder positive pole upwards.
Note
Take care not to touch the surfaces of the batteries during installation.
The circuit board contains a small 4-bit microprocessor system, a switch and an infra
red transmitter. Each time the switch is operated the microprocessor generates a
pseudo-random bit pattern which is transmitted by the infra red transmitter. This signal
is received by the infra red detector on the LED card within the system unit and passed
to the security sub-system on the system board.
4/30 LS PRO HARDWARE TECHNICAL REFERENCE
BATTERIES