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Switch Installation
Universal switch module (order No. 913648E) can be installed
(before ST mounting!) into position 1 or 2 without removing the ST
cover. Having inserted the module into the motherboard margin
slots, tighten the two screws (through the panel cutouts).
Caution
Be sure to tighten both the screws!
Warnings
In reality, the "Contact" is a semiconductor switch of the ON-state
resistance of about 0.5 Ω. Switching voltage values lower than 9V may
bring troubles – the switch function cannot be, e.g., tested using a
common ohmmeter because it is used for small voltage only.
The maximum switched current is 1 A. The switch is protected with a
resettable fuse against higher current values
The allowed voltage is from 9 to 24 V, both DC and AC. The switch is
equipped with overvoltage protection against voltage peaks.
The switch "contact" is safely electrically isolated from the telephone line,
yet designed for weak-current applications only. It cannot be used for
mains voltage of 230 V or 120 V.
Lift blocking module Installation
Lift blocking module (order No. 913649E) can be installed
(before ST mounting!) into position 2 without removing the ST
cover. Having inserted the module into the motherboard
margin slots, tighten the two screws (holes in the panel).
Caution
Be sure to tighten both the screws!
Module function
The contact is closed when the telephone line is OK.
Cautions
The module responds to the telephone line disconnection with an up to 2
minutes' delay.
The maximum switched current is 1 A. The allowed voltage value is up to
24 V. It is a mechanical contact (relay)).
Warning
The module "contact" is safely electrically isolated from the telephone line,
yet designed for weak-current applications only. It cannot be used for
mains voltage of 230V or 120V.
Installation – universal version
2.5
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