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We are looking for an RF Remote Control Access for activating a solenoid or relay coil like a door lock. Our application is for a push button activation of a remote +5V or +12V relay to latch and unlatch the same as a door lock in an automobile. Click the button to latch and click the other button to unlatch. Exact the same as an automobile door lock mechanism. Do you have this small circuit board powered by a 3V battery?