... LED will flashes out, thats means program successfully.The siren can program with max 88PCS (PIR detector, door ... remote controller)How to use itPress arm key, siren will sound DI`, 8 second delay after into ... alert statePress disarm key, siren will sounds DI`DI`DI,Short press the ... "emergency" button the siren will sound and light alarm immediately, (the ...