Features: 1.Unit doublet square sensor with low noise and high sensitivity. 2.Internal 465 self-testing program. 3.Red LED to alarm with continuous flash for 3 seconds. 4.Two stage autopulse number adjustment, temperature compensation and metal shielding. 5.Ceiling installation equipped with passive infrared motion detector, greatly suitable for the anti-theft use. Specification: Features:_x000D_ _x000D_ Unit doublet square sensor with low noise and high sensitivity. _x000D_ Internal 465 self-testing program. _x000D_ Red LED to alarm with continuous flash for 3 seconds. _x000D_ Two stage autopulse number adjustment, temperature compensation and metal shielding. _x000D_ Ceiling installation equipped with passive infrared motion detector, greatly suitable for the anti-theft use. _x000D_ _x000D_ Specification:_x000D_ Condition: 100% Brand New_x000D_ Material: ABS_x000D_ Color: White_x000D_ Optional Type: Normally open, normally closed_x000D_ Sensor: Unit doublet square, low noise, high sensitivity_x000D_ Signal Processing: Two stage autopulse, temperature compensation, metal shielding_x000D_ Detection Speed: 0.2m~7m/s_x000D_ Working Temperature: -10C~+50C_x000D_ Power Input: Max.18MA, DC9-16V_x000D_ Lens: LODIFF lens_x000D_ Detection Range: 7*8.5m_x000D_ Installation Height: 2.2-4.5m_x000D_ Partition: 12+12+12+12+6+1=55_x000D_ Alarm Display: Red LED, continuous flash for 3 seconds_x000D_ Alarm Output: Normally open 28V DC, 0.15A_x000D_ Tampering Output: Normally open 28V DC, Max.0.15A_x000D_ Humidity: 95%_x000D_ Package Weight: Approx.91g/3.2oz_x000D_ _x000D_ Package List:_x000D_ 1 * Detector