help me how connect this two circuit

[89Panadol]

anyone can help me how connect this two circuit....the operation is the output from TRI from Ultrasonicradar circuit will activated the alarm circuit which is already connected..How i can make the output from TRI will activated the siren and strobe light simultaneously.....Which part i should connected...



with this one

 

[pranam77]

Instead of connecting the Tone generator to the collector of TR1 and Vcc in the Ultrasonic Receiver part, Connect a relay between those points. Now connect the Common and the Normally open switch points between R2 and the posetive line in the Strobe circuit. This will switch the stobe when TR1 triggers the Relay. The speed of the srtobe can be varied by the postion of the R2. Cheers.