The PIRAMID LT from PROTECH is an outdoor dual-technology motion sensor specifically designed to protect against intruders climbing ladders and towers. The LT version has a stereo doppler microwave detector that has two receiving channels with the ability to eliminate vibration and sources of false alarms. The dual-element infrared detector ignores normal temperature variations and is responsive to rapid infrared changes created by an intruder. The product has a three-position direction control switch to select the direction of movement required to activate the sensor alarm. PROTECH

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