Wireless pir motion sensor

i have one old wireless motion sensor which was laying unused ,

now i want to use it with esp nodes and RF ,
but i donno how to use and connect this unit , there is a led which blinks when motion is detected , but how to connect to this unit ?

it is having
IC - BISS0001
sensor - 500BP
315mhz filter - R315A

and i have also attached some images of this unit ,

can someone help me how to use it and test it

?