SecurityMan Air-Alarm-DL is a state-of-the-art wireless alarm system kit for homes and businesses. It includes the Air Alarm1 basic kit plus additional items of two door/window sensors SM-87B, one PIR motion sensor SM-80, one smoke sensor SM-93, and one panic button SM-89. It is user-friendly and easy to use, protecting homes/ businesses at a minimum cost of investment. Do-It-Your-Self installation and monitoring alarm system without monthly fees is a key benefit for users. The system will alert by phone calls to the owner through a series of enlisted phone numbers. The owner can then dial into the host to arm or disarm using the phone"s numeric keypad. The Air-Alarm-DL system can be upgraded by adding up to 60 wireless sensors, sirens, and up to 8 remote controllers. Package Includes: (1) Air Alarm1 basic kit: (1) control panel (7 Lx 4.75 Wx 1.75 H), (1) door/window sensor (2.75" L x 1.5" W x 0.6"H), (1) PIR motion sensor (4.25" L x 2.25" W x 1.75" H), (1) indoor siren (4.0" L x 2.75" W x 2.25" H), an