DIY,wireless, backup battery,cage protection,work with all sensor or the alarm host,smart and nice,easy to install, OEM/ODM. 1 ... . Size: 202x114x79mm, Color: white. Strobe light: red 9. Stand pack: one wireless siren with strobe light(backup li-ion battery optional), an ... adaptor(or UPS backup adaptor), one door sensor, one PIR ...