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Elikliv Laser Detector for Green Beam Laser Level, Digital Laser Receiver Used with Pulsing Line Lasers Up to 200ft, Detect Green Laser Beams, Three-Sided LED Displays - - Amazon.com
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Huepar Laser Detector for Laser Level, Digital Laser Receiver for Green and Red Beam with Double Lamp & 90 dB Buzzer, Suitable for Bright and Noisy Environments LR-8RG - Walmart.com
Laser Security System Infrared Beam Sensor Motion Detector Outdoor - from USA | eBay