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REP4507

DVR Alarm 240V Relay Trigger

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G-Day,

 

It has been so long since I have had to work with DVR alarm outputs that my regular supplier went out of business so the guy I knew and trusted is no longer available to me.

 

What I want to do is trigger some 240V mains powered lights but I cannot find a relay that will run off my DVR 12V alarm output.

 

Can someone find me something? Preferably an eBay item.

 

REP4507

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In the U.S. we would search for a relay based on its activation voltage - in this case 12 volts or 12VDC. And next by the number of switch contacts - SP = Single Pole, DP = Double Pole. And by if it is just making / breaking one connection or two. ST = Single Throw, DT = Double Throw.

 

So you could search for: 12VDC DPDT Relay

 

Then look at the contact amperage and voltage ratings.

 

Also in the U.S., relays are typically to be mounted on a printed circuit board, the same thing called a solenoid is used for automotive, and relays designed to be mounted in an electrical wiring box for building wiring are called "contactors"!

 

So perhaps: 12VDC DPDT Contactor

 

Or: 12VDC DPST Contactor

 

Of course Europe and the UK probably have different names for all this???

 

Also check in a home automation store for gizmos which are designed to turn on/off lights in a home. Wall plug-in modules and replacement wall switches. That might be a better and safer way to go - they may have some sort of controller which will accept a relay connection. Names for this stuff in in U.S. are X10 (old), INSTEON, Z-Wave, Home Automation.)

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That relay would do the job but I would not recommend it. The problem with it is the plug-in base. It looks like connection to the base is by soldering to the pins which if not illegal for 240V is certainly not a good idea when you have your low voltage coil connection in such close proximity. Try Jaycar. They have a similar one with well spaced spade connectors .

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How about these then?:

 

DC 12V Coil 10A 8 Pins DPDT Power Relay w Plastic Socket Base:

http://www.ebay.com.au/itm/DC-12V-Coil-10A-8-Pins-DPDT-Power-Relay-w-Plastic-Socket-Base-/351087428512?pt=AU_B_I_Electrical_Test_Equipment&hash=item51be7103a0&_uhb=1

DC12V Coil 3PDT 14P General Purpose Power Relay LY3J 10A AC 240V DC 28V w Base:

http://www.ebay.com.au/itm/DC12V-Coil-3PDT-14P-General-Purpose-Power-Relay-LY3J-10A-AC-240V-DC-28V-w-Base-/151392325279?pt=AU_B_I_Electrical_Test_Equipment&hash=item233faf8e9f&_uhb=1

2 Pcs DPDT 8Pins 10A Contact Power Relay DC12V Coil w 35mm DIN Rail Socket:

http://www.ebay.com.au/itm/2-Pcs-DPDT-8Pins-10A-Contact-Power-Relay-DC12V-Coil-w-35mm-DIN-Rail-Socket-/331213498097?pt=AU_B_I_Electrical_Test_Equipment&hash=item4d1ddce6f1&_uhb=1

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