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Cabling and power supply terminology
Like any industry the door entry and access control industry has a number of abbreviations and terms that are regularly used.
Below is a selection of the ones you're likely to encounter on a regular basis.
The list is not exhaustive, but it does give you a great glimpse into the more commonly used abbreviations and terms.
Cabling
> 2 -wire a system of wiring which utilises 2 cores for voltage and signal communication
> 3+N wiring system which uses 3 cores for communications and N cores for buzzer. Where N is the number of flats.
> 4+N wiring system which uses 4 cores for communications and N cores for buzzer. Where N is the number of flats.
> 5+N wiring system which uses 5 cores for communications and N cores for buzzer. Where N is the number of flats.
> 6+N wiring system which uses 6 cores for communications and N cores for buzzer. Where N is the number of flats.
> BUS Communication protocol for transfer of signals in a door entry system. Usually on a 2 wire system.
> CAT5 8 core cable (4 twisted pairs_ designed for network communications. Widely used on door entry systems.
> IP Internet protocol. IP door entry systems use networks to communicate.
> Traditional Another word for 4+N wiring systems. Widely used 5-10 years ago.
> Wireless Systems that can be installed without the need of cabling for communication.
Power supply type
> Chassis Power supplies that are Chassis only, and not boxed or encased.
> DIN mount Power supplied that can be secured onto a standard DIN rail
> In-line providing AC or DC power through the same cables as the data transfer.
> Metal boxed PSUs which are boxed and can have a battery inside
> Plug in PSUs which have a plug built in for ease of use.
Network
> RS 485 Communications standard for serial communications systems
> TCP/IP This is a set of communication protocols used in the internet or networks
Strike operation
> Fail open / safe Type of electronic lock which is open when the power fails
> Fail locked / secure Type of electronic lock which is locked when the power fails
Maglocks
> Mini Maglock which has approximately 300kg of holding force
> Standard Maglock which has approximately 600kg of holding force
> Monitored Maglock that has relay outputs which can be used to know if it is locked or not
> Door status Maglock that has a status indicator to show if it is locked or not
