Wireless reciever HT12D

[mytech]

Hi my proect is to control 2 device wireless.. what would initial output of 4 data lines in the circuit below?..
I want to use 2 data lines D1 & D2( to ground using 2 pushbuttons).. for to control 2 diff. 12v relays. Using which transistor can i drive 12v relay from 5v?..
which is the best solution for my task..
thanks..

 

[KMoffett]

Do you know the coil current or coil resistance for the 12v relays?...this will help choosing the right transistor.

Ken

 

[mytech]

Small current relay..

 

[KMoffett]

A 2N3904 with a 2.2KΩ base resistor in a common-emitter confiduration should work. Add a diode (1N4001 or equiv.) across the coil with the cathode to +12v and the anode to the transistor's collector. HI out = relay ON.

Ken