Monthly Archives: September 2015


Difference between passive and active speakers and what should be used for IP CCTV

In installing your security camera system, you will also need to buy speakers to be able to do the talk back functionality. It will let users or security personnel to talk to any intruders in the area being monitored or do broadcast a message to the people within the area. There are two types of speakers used for CCTV and these are active and passive.

All types of speakers are categorized into 2 types: active and passive. This doesn’t count the numbers of drivers, type of enclosure, type of poles and other descriptions and characteristics. The speakers are classified based on how they work with the amplifier that drives them.

Passive Speakers

A great number of speakers fall into the passive kind. A passive kind of speaker does not have an amplifier built in into it. It should be connected to an amplifier to power up the speaker and hear something from the microphone of the IP Camera. The speakers’ signal levels are amplified sufficiently to be able to drive and make the speakers work properly.


  • There is another power amplifier that functions to send the complete audio signal towards the speakers
  • The audio signals are being driven separately and per amp individually
  • The crossover components are passive which means the audio signals are split and sent to every band in a direct manner to the drivers of the loudspeaker.
  • The components generally composed of arranged capacitors, inductors and resistors that split the signals.
  • Every frequency part are sent to the speakers’ drivers

In a passive speaker, users have the freedom to decide which amplifier to use or whether to upgrade their amplifier later on. Whereas with active speakers, which has a built-in amplifier basically you can no longer upgrade to other amplifiers later on. This is also why most amplifier brands are “over-built” to be able to be suitable to a wide variety of speakers.

Active Speakers

Active speakers have amplifiers built in them. These speakers are being consumed with line-level signals that pass over an interconnecting cable that starts from the controller. The advantage of active speaker they can easily be plugged in to the line out of the IP camera and its will already work. Active speakers may become limiting to your ability to choose amplifiers and tailor them to the existing audio system and they also are generally more expensive and mostly heavier.


  • Every channel is protected
  • Every driver has a dedicated amp
  • The electronic crossovers are active prior to the amps
  • The active speakers have drivers that have response controls
  • The speaker components, housing, drivers and amps are all manufactured considering each other.


For a camera surveillance system, you have to consider where your speakers are going to be placed whether indoors or outdoors. There are active and passive speakers both made for indoor and outdoor use. You just have to consider your budget as well as whether you want to upgrade your amplifiers later on. Installation wise setting up speakers is pretty easy and quick. Users generally just need to adjust the volume control after connecting it to the security camera.

For more information or to get a free consultation, please contact us at 212 997 2000 or email us at 

En Genus WiFi Extender

How to Extend your Wi-Fi from a Far Distance

There is a way to extend your Wi-Fi connection and make your Wi-Fi IP camera become more stable especially if the Wi-Fi camera is placed on a spot beyond the coverage of the Wi-Fi signal. There are other instances when there are walls or doors hampering the Wi-Fi signal strength. PowerCCTV has the solution for this which is the Wi-Fi extender. A Wi-Fi extender extends or expands the range or the wireless coverage of the LAN. This device is typically placed between a base router and an access point or any other point or client that is not near enough to receive a decent wireless service or one that is located in between a barrier.

Point to point image for wifi extendr

This is a wireless access point that can be placed outdoors built with high gain antennas which greatly extends the range of the wireless transmission to deliver a much stable connection covering wide distances of even up to 5 miles provided there is a clear point to point line of communication. It is able to work even under extreme weather conditions and the housing is very sturdy. We recommend using the WiFi that uses the 5GHz rather than a WiFi extender that uses 2.4 GHz for the reasons below:

  1. To avoid interference from 2.4 GHz devices
  2. To provide faster data transmission rates and has fewer disconnections.
  3. Bluetooth and other wireless devices won’t be bothering you when using the 5GHz spectrum so there will be much lesser interference.

The range extender makes a connection wirelessly to the access point or to the router and pick up the signal then transmits it again. The transmission time or speed for the devices or clients trying to connect through the Wi-Fi extender may not always be equivalent to the service being received by the base station and there will be an increase in the latency for every hop. The Wi-Fi extender or range extender works better for devices or clients that have weaker signal strength than those that totally does not get any signal.

Typical System Requirements

  • Computer (Linux, Windows, Mac OS )
  • Web browser
  • Equipped with network interface
  • Wired connection: interface using RJ-45 Ethernet port
  • Wireless connection

Important things to consider when choosing Wi-Fi range extenders:

  • The range extender should be in the range of both the device and the source of signal.
  • It would require the encryption keys associated if the corresponding signal is likewise encrypted.
  • It uses an IP address that is static which is not identifiable by the client.
  • The signal strength being broadcasted by the device will typically be the same to that of the origin or source.
  • The system operates best if the Wi-Fi extender will use the same software and chipsets to that of the access point or the base router.

Recommended Products

  • EnGenuisEnstation 5 (Long-Range Wireless 5 GHz Outdoor AP/Bridge)
  • EnGenuisENH220EXT (Single Band Wireless Ruggedized N300 Outdoor Access Point)

A Wi-Fi extender can be one of the important and one of the most helpful accessories for your Wi-Fi IP security camera.

To know more information about this or to get a free consultation on CCTV and other services, please contact us at 212-997-2000 or email us at 

12 V Adpter

How to extend power adapter for CCTV in 3 easy steps

1- Buy the right wire:

We highly recommend the 12 V AWG 18 / AWG16 solid copper conductorsand we advise not to buy CCA (Copper Clad Aluminum)

Solid Copper Conductors

solid copper conductors

Copper Clad Aluminum Wire

Copper Clad Aluminum wire

The 12 V AWG 18 2 Conductor Thermostat Cable is a good choice.

Make sure the distance is not over 25 meters between the IP cam and the power source if you plan to use this cable.

2- PAIR the 12V Male+Female 2.1×5.5MM DC Power Jack Plug Adapter Connector for the CCTV

DC Male Connector

DC Male Connector

3- Use the right adapter:

The required Power adapter is 12V at least 1A: Adapter 12V 2A AC DC Plug Power Supply for CCTV Security Camera System

Note: In case you will connect 2 IP Camera (CCTV) in parallel in one Power adaptor make sure that the Current (A) is higher than the required to drive current to the IP cameras. For example the required adaptor for each camera is 12V 1A, the adapter that you will select to be connected in parallel is a 12V 3A for the IP cameras to work.

The user must also use aswitching power adaptor best with voltage stabilizer

Specification: Over-Current/Short Output Protection: The power supply will withstand a continuous short output .Normal operation will resume when the short output protection has been removed.

12 V Adpter


  1. Cut the 12V AWG 18/16 2 conductor cable according to the length from the CCTV camera to the power plug. Pleasereserve extra length of wire just in case.
  2. Use the small Phillips screw driver to connect the wire to DC male connector on one end and the DC female connector on the other end.
  3. Lay the 12V 2 conductor wire from the location of the CCTV to the power plug.
  4. Next connect the DC male Connector to the CCTV power adapter end (Female).
  5. Lastly, connect the DC female connector to the power adapter end (Male).

How to Select The Correct IP Camera

Wireless, Wired and 3G/4G) for a Certain Scenario

Presently there is an alarming rate of increase in crimes and burglaries all over the country. There is a pressing need to increase security measures at homes and businesses. One of the main ways to secure premises be it residential or business is by installing security or surveillance cameras. Many consumers don’t know the differences among several IP surveillance camera models and its network connections. It could be wireless, wired and mobile. Wired IP CCTVs are connected via LAN or data cables while wireless IP cameras get connected through a wireless router and the mobile camera has a built-in slot for a 3g/4G sim card that would supply Internet connection via 3G/4G

Wired IP CCTVs

Wired IP CCTVs are connected via LAN cables and offers a better quality of the images as well as audio recordings since there little to none of signal interference. The signal from the wired IP CCTV is also less prone to hacking or tampering from outsiders because it directly connected to the monitor and recording device via the data cables.

Recommended models:

Dome IP Cameras:

  • PowerCCTV PC-VD21-312R
  • PowerCCTV PC-D13-4WIR
  • PowerCCTV PC-D21-312-IWDR (Indoor)

Bullet IP Camera:

  • PowerCCTV PC-B21-312-IWDR

Recommended Applications

  • Residential
  • Offices
  • Business establishments such as supermarkets and beauty salons
  • Church
  • Government offices
  • Gas stations
  • Factories
  • Manufacturing sites

However there are many instances or scenarios where cabling is not possible or laying out cables in the site or location is not safe and can be a hazard. Then wireless IP security cameras are the best option for that. The conditions when you consider the wireless IP security camera are below:

  1. The RJ45 cable has a distance limitation of up to 300 feet if you go beyond that you have to use an extender which we also have but more than 500 meters and the signal will still diminish.
  2. Environment where the IP camera is located is always changing such as the scaffolding in construction sites
  3. Laying out data cables or wire is not possible or hazardous.

Wireless IP CCTVs

A wireless IP security camera requires minimal wiring but should be connected through a wireless router. It spares the floor and walls from cabling hassles such as drilling and spoiling the design or décor of the premises. Wireless IP security cameras can be susceptible to loss of signals or interferences by weather conditions or from other devices such as cellphones and televisions. Despite being wireless this type of camera still needs to get connected to a power source.

At PowerCCTV we have the solution to be able to connect the wireless IP security camera via a WiFi extender so businesses such as refineries can still use the wireless IP CCTV by connecting it to a wireless router within the access point of 5 miles.

Recommended models: PowerCCTV PC-B21-312-WDR

Recommended Applications:

  • refineries
  • construction sites such as scaffolding
  • boat security systems
  • shopping mall annex
  • building annex
  • Schools
  • Farms

However there is still the scenario when the wireless IP surveillance camera won’t be feasible especially when you cannot get enough Internet bandwidth or there is no access point beyond 5 miles.


3G/4G IP CCTV has a slot for the SIM card that would provide the 3G/4G Internet connection. This camera type does not require cabling and has no networking requirements. Users usually manage these cameras via the cloud portal.

Recommended models: PowerCCTV PC-B21-312-4WDR

Recommended Applications:

  • Construction sites monitoring
  • Delivery trucks monitoring
  • Bus and Public transport monitoring
  • Mass transportation monitoring such as trains
  • Parking lots
  • Farms
  • Crossing lanes in the railroad
  • School vans
  • Police vehicles such as armored vans and cars
  • Monitoring checkpoints

Note: ISP data charges per month applies

IP CCTVs can come in wired, wireless or 3G/4G network connections. It is important to know the exact limitations and requirements of where you intend to place the security cameras. As a rule of thumb for selection, By default you should see and make sure first if having wired IP cctv is feasible to implement, if not then change to WiFi and lastly if WiFi or your requirements won’t let you have it possible then use 3G/4G.

For a free consultation please contact us at  1-212-997-2000 or e-mail us at