By BUILDER Magazine Staff. NAPCO Security Systems recently introduced the GEM-P801 security system, the newest version of its security systems geared for the residential market. The unit lets users customize their home into nine different zones: six hardwire or wireless, two additional wireless, and one, two-wire fire zone to support a smoke detector. Other features include an LCD keypad and a modular phone connection. Users can also print out an audit trail via a special external modem. NAPCO says builders can also use the unit as a temporary alarm on jobsites. The unit costs $100; the external modem is an additional $73.45. Call 631-842-9400 for more information.