Tech Tips: Decimal, Hexadecimal and Binary

  • October 28, 2020, 9:48 am

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...

Tech Tips: Security Industry Myths And Misconceptions

  • October 28, 2020, 9:28 am

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.  ...

Tech Tips: How Do I Make Up A Resistor?

  • October 28, 2020, 9:07 am

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...

Tech Tips: Power Supplies… The Forgotten Component

  • October 28, 2020, 8:42 am

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...

Tech Tips: Alarm Testing

  • October 21, 2020, 12:56 pm

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...

Tech Tips: Volts, Power… Resistance Etc?

  • October 21, 2020, 11:44 am

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...

Tech Tips: What Size Power Supply?

  • October 21, 2020, 10:58 am

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:-   ***...

Tech Tips: Electric Strikes & What Are The Options

  • October 21, 2020, 8:57 am

I have noticed recently a lot of confusion in relation to electric strikes, specifically which strike is needed for a specific application. This week I will discuss many of the options on electric strikes, and...

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