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Unlatch single coil 5v Relay and control it with Arduino

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http://forum.allaboutcircuits.com – Hi, I'm trying to turn on my radio by sending a pulse from my arduino to a latching relay. The radio is powered by a 9volt battery. So basically I want the arduino to send a pulse to the relay which will make the relay latch and thus turn the 9volt battery on. The Relay I am using is the Omron G6EU-134p. It is a 5v single coil latching relay. At the moment there is a connection between pins 7 and 12 but I do not know how to make this unlatch and therefore make a connection between pins 7 and 10? I don't know how to unlatch the relay and I'm unsure as to how I should build this circuit? (Embedded)