This product can be used in combination with the following products
To use as a stand alone system, you will need to purchase an (HA-REMOTE) to arm and disarm the siren. Once one of these sensors detects motion, it will sound an ear splitting alarm. The siren has an automatic shut off. Every 30 seconds the alarm will turn on and off once the alarm is triggered until its reset. The siren comes with a power adapter and wall mount. It will work with 4 AAA batteries (not included).