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Alarm system with one trigger and many receivers?


Headteacher

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We are a school who need to develop a "lockdown" protocol in the event of an intruder on site. We have two buildings, close together, each of two floors, so sending messages verbally and crossing between buildings takes an inordinate amount of time.

 

In theory, with a powerful enough wireless transmitter, and probably some wireless extension relays, a simple alarm/doorbell system would do the trick. Wireless sirens are available at <£20, doorbell chimes even less. The technology seems to exist (ie multiple sensors feeding one alarm) but we want to reverse this. Commercial/wired solutions cost a silly amount of money.

 

Can anyone suggest how to develop an extendable wireless system which would allow one or two buttons to make around 20 receivers/sirens/chimes activate?

 

 

 

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Hi we have a lockdown solution that not only sounds sounders around the school it works with an app. It can be activated from the app so from a smart phone and it will alert everyone in the school that has the app on their phone. It tells you not only that there is an intruder, but where on the grounds that intruder is.

 

We have already installed this system in several schools and colleges.

 

https://www.wakefield-security.co.uk/commercial-security/security-systems-for-schools-colleges-and-universities/critical-incident-management/

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For your DIY solution this would be possible when everything is controlled from a control panel but I wouldn't want to be trusting one way wireless doorbells or the like with this.

My first thought would be using site PA system or class change to get messages out.

Clearly a bespoke system like in the link above is a much better solution all round.

 

15 minutes ago, MrHappy said:

new(er) website looks good

Was thinking the same, very yellow.

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1 hour ago, Headteacher said:

We are a school who need to develop a "lockdown" protocol in the event of an intruder on site. We have two buildings, close together, each of two floors, so sending messages verbally and crossing between buildings takes an inordinate amount of time.

 

In theory, with a powerful enough wireless transmitter, and probably some wireless extension relays, a simple alarm/doorbell system would do the trick. Wireless sirens are available at <£20, doorbell chimes even less. The technology seems to exist (ie multiple sensors feeding one alarm) but we want to reverse this. Commercial/wired solutions cost a silly amount of money.

 

Can anyone suggest how to develop an extendable wireless system which would allow one or two buttons to make around 20 receivers/sirens/chimes activate?

 

 

 

You would still expect to pay decent money , rather than using £20 chimes although you might think they do the trick but that would depend on how seriously your taking an intruder alert 

Commercial wired systems or via WiFi cost more as they tend to work better and more often 

 

I assume the school has a fire alarm commercial not battery operated smoke detectors for the home? No sarcasm intended

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3 hours ago, Headteacher said:

We are a school who need to develop a "lockdown" protocol in the event of an intruder on site. We have two buildings, close together, each of two floors, so sending messages verbally and crossing between buildings takes an inordinate amount of time.

 

In theory, with a powerful enough wireless transmitter, and probably some wireless extension relays, a simple alarm/doorbell system would do the trick. Wireless sirens are available at <£20, doorbell chimes even less. The technology seems to exist (ie multiple sensors feeding one alarm) but we want to reverse this. Commercial/wired solutions cost a silly amount of money.

 

Can anyone suggest how to develop an extendable wireless system which would allow one or two buttons to make around 20 receivers/sirens/chimes activate?

 

 

 

Depends on your mindset, do you want maybe say 90% reliability or less. If less your going the right way look at generally available diy ring etc. Will work via the school WiFi. You could go as you say for 1 way rf door bells or even 1 way rf security stuff. But the bigger question is do you need it to be resilient, something to rely on? 

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