... by adding up to 60 wireless sensors, sirens, and up to 8 remote controllers.2.Features: - Easy-to-use ... - Transmit at 430-433MHz frequency band, wireless transmitting distance up to 300 feet (remote controller, smoke sensor, & siren)and up ... Battery (alkaline) included for remote controllers, wireless door sensor, and wireless motion sensor last up to 2 years. - Programmable password. - Ademco CID ...