SecurityMan SM-80 Wireless Wide-Angle PIR Motion Sensor Product Features: Operating power: 9V alkaline battery Wireless Transmitting distance: ≥ 450 ft (in open area) Service life: ≤ 2 years Detecting distance: 100° 10 x 10m IETSM80$26.95 Sales Assistance: 909-548-7787 (9:30-6 Pacific, M-F) Phone-Orders and Will-Calls are welcome! Call us before you arrive in-store! Holiday Dec.24 & 31 Office are closed. For UPS Holiday delivery schedule, visit US Holiday Operations Schedule All items carry a 14-day money back guarantee (15% re-stocking and without shipping charge) For OPENED Software Package with manufacturer guarantee, the customer should contact the manufacturer directly for service or exchange All trademarks, registered trademarks, and names are the property of their respective owners.