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AUDIO ONLY & AUDIO/VIDEO INTERCOM SYSTEM COMPARISON CHARTS

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Features
See explanations below

Aiphone
LEM-1DLS
Aiphone
LEF
Aiphone
Video
Residential &
Small Business
Yes Yes Yes
Commercial &
Industrial
No No Yes
PC
Programmable
No No No
Maximum
Memory
- - -
Directory
Codes
- - -
Entry
Codes
- - -
Control
Relays
1 0 1
Tracker
Expansion
No - -
Elevator
Control
No - -
Security
Levels
No - -
Hold Open
Time Zones
No - -
Transactions
Memory
- - -
Max Device
Codes
- - -
Directory
Display
- - -
Mounting
Options
Surface
or Wall
Surface
or Flush
Surface
or Flush
Optional Internal
CCTV Video
No No Yes
Programmed
Call Forwarding
- - -
Programmed
Do Not Disturb
- - -
Wireless
Option
- - -

Feature Explanations:

Residential & Small Business Applications - Designed for use as a single family or small business unit. Can accept up to 100 different codes on some models.
Commercial & Industrial Applications -
Designed with capability to support over 100 users. For use with apartment buildings, gated communities, condominiums, office buildings, factories and industrial sites.
PC Programmable -
Can be programmed from a PC. Software included or available by download. Most models accept keypad programming also.
Maximum Memory -
Maximum amount of expandable memory. More memory supports functions not available on smaller units. Not all units are expandable.
Directory Codes -
Amount of digits in codes designated for each user or tenant.
Entry Codes -
Maximum amount of codes the unit will accept.
Control Relays - Amount of gates or doors that the unit can control. Each relay operates a separate door or gate. Most models can be expanded to monitor multiple gates or doors but may require more intercom units or keypads. Extra tracker boards may be required to record transactions on these entrances.
Tracker Expansion -
Tracker boards can be used to monitor different locations accessed by system.
Elevator Control - Unit capable of controlling elevator use. Can give access to desired floors.
Security Levels -
Programmable security levels. Can program different levels of security for each user.
Hold Open Time Zones -
Unit can be programmed to allow management to unlock all doors or gates controlled by a tracker board for a specified amount of time..
Transactions Memory -
Amount of transactions the unit's buffer will hold in memory. Records all events of entry made on system.
Maximum Device Codes -
Maximum cards or transmitters recognized by unit. Card readers and transmitters are only available for select models.
Directory Display - Type of display and maximum amount of characters displayed.
Mounting Options -
Types of units available for different mounting situations. Mounting options include surface, flush or wall mounts. Surface mount systems can be installed on pedestals or gooseneck stands.
Optional Internal CCTV Video - Unit is available with CCTV option. The ultimate caller I.D.
Call Forwarding - Allows the unit to dial a pre-programmed telephone number when the resident is not home. Resident can grant or deny entry from that remote location.
Do Not Disturb -  Programmed times when access will not be available via unit. Usually set up to deny access during night or holiday hours.
Wireless Option -  Unit can be used as a wireless or hard-wired system. See information on respective pages for more information.