How to install outdoor wired wireless detector professional anti mask burglar alarm system

Focus meiantech alarm system is professional home security system. It adopts multiple new technology to enable the reliability and accurate of anti theft. Motion Sensor anti-mask and tamper-resistant outdoor intruder alarm FT-89SR is outdoor detector with technology of microwave detection, PIR infrared detection, pet immunity, strong light interference resistance etc. Video guide of how to install the outdoor detector let you learn to install professional burglar alarm system step by step.