One of the more common items we sell are timers or relays with a trigger type input. These devices normally have a negative and positive trigger input. They also have positive and negative power connections....
Every week I have a call requesting me to convert from hexadecimal (hex) to decimal, or from binary to decimal number format. Here is how it works. In all of the explanations I will work...
It has recently come to my attention that there are a number of misconceptions held by many installers in the security industry. I will try to correct some of these and explain the rationale. ...
Almost all alarm systems use end of line resistors. Many use multiple resistors to give alarm and tamper, or multiple zones on the one physical input to the panel. One of the more common calls...
Nearly every system we do involves a power supply of some type, from the humble 16vAC plug pack with an alarm panel, all the way through to 20Amp rack mounted power supplies. A constant failing...
It has recently been pointed out to me that ‘fault finding’ is becoming a lost art, especially when it comes to motion sensors. With this in mind here is a list of pointers that we...
I often get asked about the relationship between Volts, Amps, Ohms and Power so this week I thought I would cover just that. This relationship is defined by ohms law. The symbols and abbreviations...
One of the more common questions I get asked is what size power supply is needed for. Below is a list of common items and their approximate power requirements at 12v DC:- ***...
Access control systems, like other security products, face myriad cybersecurity threats — the majority of which include a ‘human [...Read More]
Discover how OSDP is modernizing access control systems, from overcoming installation challenges to maximizing security and efficiency, paving the way [...Read More]
How to transform your image from service provider to trusted guardian Jennifer Pringle [caption id="attachment_20951" align="aligncenter" width="700"] Building a [...Read More]