Cảm biến kính vỡ PARADOX G550 – Detects breaking of different types of glass including plated, tempered, laminated and wired – Wireless range: 6 meter (20 ft) radius range and 360º coverage pattern protects an entire room with one sensor – Factory-set sensitivity for quick and safe installation Thông số kỹ thuật Model G550 Power 3 x AA Alkaline batteries RF Frequency 433 or 868 MHz Battery Life 2 […]