Napco Libra wireless equipment stands head and shoulders above all other products available on the South African market! The main difference between it and other manufacturer's equipment is - this range of products works, every time!Transmitters are crystal controlled. Only a crystal oscillator has the frequency stability and narrow bandwidth signal needed to "punch-through" interference. Receivers are crystal controlled, superhet, dual-diversity receivers. The superhet allows signals to be "grabbed" out of the congested bands - dual-diversity reception provides the facility to "lock-on" to a weak signal. Distance covered may be up to 900 metres, line-of-sight, depending upon conditions! gas detector smoke alarm PIR detector
Lithium batteries, providing a life of up to four years under ideal circumstances are used, and every transmission incorporates a battery-condition indicator. Receivers may be programmed to require a regular "supervisory transmission" every hour, and signal strength is monitored on every transmission. Detectors and transmitters are common across the entire Express and Gemini ranges. Receivers however, are divided into an eight-zone model for the three-wire keypad bus of the Express XP400/600 and Gemini P400/800 range, and eight, sixteen and ninety-six zone models for the four-wire keypad bus of the Gemini P816/P1632/3200/9600 panels. Transmission devices are programmed into each receiver by means of unique serial numbers - to install a detector, the serial number is entered and "associated" to a specific zone by entering the required zone-number. Thus for example, the eight zones of an eight-zone receiver may be used to provide wireless coverage of any eight zones which need not be contiguous in position. The serial number sent with each transmittion is monitored by the alarm control panel (together with the battery condition indicator) - this makes for very quick, easy installation.To the user, there is no difference in operation between a "hard-wired" detector and a Napco Gemini wireless device. Zones are bypassed, activated, and indicate exactly as if they were hard-wired!For trouble-free, no-nonsense wireless coverage of difficult sites, the Napco Gemini wireless range cannot be bettered!
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