Instructions

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44. AUXILIARY INFORMATION
DRY CONTACT
A dry contact means that no electricity is connected to it. It is prepared for free connections. The Relay Output contacts
provided in this keypad system are dry contacts.
N.C.
Normally Closed, the contact is closed circuit at normal status. It is open circuit when active.
N.O.
Normally Open, the contact is open circuit at normal status. It is closed circuit when active.
TRANSISTOR OPEN COLLECTOR OUTPUT
An open collector output is equivalent to a Normally Open (N.O.) contact referring to ground similar to a relay contact
referring to ground. The transistor is normally OFF, and its output switches to ground (-) when active. The open
collector can only provide switching function for small power but it is usually good enough for controlling of an alarm
system. The Duress, Inter-lock and Key Active/Alarm Outputs of the keypad are open collector outputs.
OPEN COLLECTOR
OUTPUT ----
Output switches to
ground when activated
EQUIVALENT
N.O. CONTACT
OUTPUT ----
Output switches to
ground when activated
45. CARE AND CLEANING
• This product does not require servicing. Repair work must be done by a specialist technician.
• Use a dry, clean and soft cloth to clean the product. The cloth can be dampened with water to clean the keypad
on the code lock.
• Never use aggressive detergents, rubbing alcohol or other chemical solutions, as these may damage the housing
or cause the product to malfunction.
• Use a dry, lint-free cloth to clean the product. Do not press too hard on the housing, as this can lead to scratch
marks.