... a fully supervised siren designed to work with the all kinds of wireless accessories, such as: PIR Sensor, ... will flashes out, thats means program successfully.The siren can program with max 88PCS (PIR detector, door ... controller)How to use itPress arm key, siren will sound DI`, 8 second delay after into ... `DI,Short press the "emergency" button the siren will sound and light alarm immediately, (the ...