OSI Window-Door Sensors (Wireless) Protect your whole home with a these OSI PIR Motion sensors that can be paired to your OSI Smart Wireless Alarm System. PIR Motion Sensors provide maximum coverage in your home, pointing at important "choke points" such as entry ways, hallways and stairwe... See More

No Contracts. No hardwiring. No hassle. Our OSI Wifi Alarm System is a  low commitment, easy to set up, and effective self-monitoring DIY system. Suits perfectly for home owners, small business owners, and is especailly favorite for renters of all types and those who need to move frequently for... See More

OSI Wireless PIR Motion Sensor Protect your whole home with a these OSI PIR Motion sensors that can be paired to your OSI Smart Wireless Alarm System. PIR Motion Sensors provide maximum coverage in your home, pointing at important "choke points" such as entry ways, hallways and stairwells.... See More

No Contracts. No hardwiring. No hassle. Our OSI Wifi Alarm System is a  low commitment, easy to set up, and effective self-monitoring DIY system. Suits perfectly for home owners, small business owners, and is especailly favorite for renters of all types and those who need to move frequently for... See More