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id say the going rate is proably higher. There are lower priced gsm diallers, but have you tried buying a mobile phone thats not network locked/subsidised? non gsm diallers are far cheaper.

triple eol, is nomrally used for additional reporting, ie mask or fault etc. But i agree the sensors and door contacts with built in resistors makes things a lot easier

single eol is the old (american i believe) eol system that provides cable cut protection butt no short circuit protection that the more usual double eol provides.

lol yeah one that guarantees next day then doesnt perform Maybe i should as sales if we can start doing next day again officially but im only in tech support so have no say on it, i just get the emails lol but ill pass the comment on, on monday

Thankyou Mr RF lighting much appriciated. But we dont guarantee a next delivery anymore. We try and it usually it is but under some circumstances we dont, which is why we stopped guaranteeing it.

If i recall correctly its because carbon monoxide has a similar density to air, if it was alot heavier then low would be best, and if a lot lighter then high. But im sure its very very similar so middle of the room.

From my personal opinion, id say they are better than none/battery units but care should be taken as it is nowhere near as good as a full fire alarm, with fireproof cable etc. If the cable is damaged by the fire before the sensor activates then you may or may not get an alarm from it depending...

you can but an sd3 from any of the online stores. Obviosly its a part we sell, but there are other suppliers, Just google for menvier sd3

while the above is a good idea to give individual tamper indication in a double pole system, it doest provide short circuit protection between tamper and alarm. The tamper circuit is a different polarity to the alarm circuit so a fault (ie a nail or a defeat attempt etc) shorting the alarm...

EOL will allow for individual tampers, ie each device can report a tamper, rather than using the global tamper. If you only have 1 device per zone then id persoanlly go for eol.

there used to be a lot of devices that did this, i remember myself a hilclare unit but thats just reminising lol Timeguard make a similar unit now, so you can have your security light and a plug in chime. Just google timeguard plug in chime im sure that tasley used to make one also but...

If your adding wireless cctv with an ip cam as one the posts begins to indicate you can have upto 253 devices on a 255.255.255.0 subnet Obviously you can go further by altering the subnet but 255 is usually enough If your using a wireless cam that operates on 802.11x freq then in my experience...

It depends on the quality of the gear you want to use From my experience id say have a look at the scantronic rf stuff, the 7 series You can get a standalone reciever that will take upto 2 wireless devices and give seperate relays per device. The reciever is a Scantronic 762

Davy Id have a look at the Menvier SD3, CQR also do a GSM dialler but the SD3 is IMO a better unit

breezer I beleive URN's are coming for fire and they will be withdrawing more

depends where you get them from, id advise you check before purchase

there are various regulations you need to consider for your fire alarm, the OSG is purly a interpretation guide to 7671. The reqirement for sound levels and system design comes from 5839. mains operated smokes are not anything to do with 5839 nor are ones linked to your intruder alarm. In time...

id say if its 12 yrs old its was a late model. Id agree 12 years is a decent life for any electrical item, its done its bit

Out of choice yes id agree go with wired and avoid the diy type wireless, but decent wireless kit is available that while not as good as wired is far better then low security, easy to configure wireless. But it does have its issus that wired doesnt, but then it doesnt have wires lol

also i would think its an old c&k maybe an active 5 clone etc. If its activating while unset then i would guess at a tamper issue or battery issue as above