A guide to types of control methods for gates
Knowing that your entrance will be secured automatically, when you need it to be, allows you
to concentrate on the important things in your life. In our experience, the key point to get right is
how to actually operate the system in the most effective way for the given circumstances.
Control system Logic:
There are a couple of options on the type of closure sequence you can choose.
Step by step: a trigger is needed to make the gate open, a separate trigger to make it close.
Automatic closure: a trigger starts a sequence of actions. The gate will open, pause and close without a further trigger. This method is used in the vast majority of situations.
All gates come with a built in radio receiver which is triggered by fobs. These are programmed to the specific gate.
Standard fobs have 2 buttons, 4 button fobs are available.
Each button is registered to a specific gate. This allows you to control either 2 or 4 different gates from each fob ( see right).
We use the latest technology rolling code security which prevents would be intruders scamming or cloning the frequency.
Typical range is 50 metres from the gate.
A popular control device, either hard wired back to the control panel or battery powered with a wireless link.
Normally the codes can be changed quickly when necessary.
Often the keypad will be put on a post allowing the user to operate it from a vehicle window.
Most keypads can be set with 1 code.
If you need multiple codes this can be provided allowing perhaps a separate regularly changed code for casual workers without interfering with the mainstream code.
GSM intercom uses mobile phone technology to dial out from the unit to a land line or mobile phone.
The intercoms can be programmed to phone up to 2 divert numbers if the first number doesn’t answer.
Typically the first number could be the property landline, if that isn’t answered the manager’s mobile and then if that is not answered, a further person’s mobile.
The answering person can then trigger the gate remotely by dialling 11 on the keypad of their phone.
Where an entrance leads to multiple properties (for example industrial units or different flats) we can provide intercoms with 2 or 4 separate call buttons.
If more are needed we have a digital unit which can give up to 100 different destinations - as per picture above right.
GSM intercoms allows users to dial the unit to trigger the gate by phoning the mobile number of the SIM card. Two security levels are available.
1. Standard level. Any phone calling the intercom triggers the gate.
2. Higher level. Phone numbers need to be registered to the intercom one by one. Each number is
designated a user number so the administrator can delete an individual user if required.
GSM intercoms are set up and adjusted simply by texting into it.
The intercom gives you the best way to control and welcome callers regardless of whether you are at home or away.
GSM Relay: A GSM switching device contains a SIM card like the intercom and allows persons to register their phones, dial in and trigger the gate.
Road sensors work by creating an electromagnetic field in the roadway. If an object containing enough iron passes over or by it the sensor will trigger the gate. The field becomes more sensitive the closer you get to the sensor. There are two types:
A simple round probe 200mm long by 25mm wide which is buried in the road and has a connecting cable which is linked back to the control system. This is not adjustable for sensitivity.
2. An inductive loop which consists of a rectangular slot cut into the tarmac or concrete roadway. A special
cable is run around this cut and back to the control system. The cut out is then sealed up with tar or resin
compounds. These loops are seen at most traffic light junctions to sense the traffic. These loops are
adjustable for sensitivity and also used to prevent barriers closing onto vehicles.
Sometimes we install a road sensor on the approach to a gate so it opens automatically for the visitor. This sensor would then be wired through a timer to disable it outside of hours.
7 day Timers: Timer modules can be added to open and close the gate at set times and to enable and disable other devices like road sensors.
Different times can be set for each day throughout the week.
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