1, PSTN security alarm with LED display and keyboard 2,99 wireless and 2 wired 3,Voice prompt function 1, PSTN Voice prompt ... the registration network.3, equipped with integrated color LED function display, date, clock, display and keyboard set, the query. 4, the host ... telephone remote control, five models out arm, stay arm and disarm, and other functions. 19, wireless detector with the host using ...