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目前显示的是标签为“vehicel loop detector”的博文

Automatic Parking Barrier Loop Detector Gate Proximity Sensor - Buy Gate Proximity Sensor,Loop Detectors Gate Proximity Sensor Product on Alibaba.com

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Automatic Parking Barrier Loop Detector Gate Proximity Sensor - Buy Gate Proximity Sensor,Loop Detectors Gate Proximity Sensor Product on Alibaba.com Specification: Supply voltage AC110V or 220V    Voltage tolerance AC +10% / -15% Voltage tolerance DC ±15% Power Consumption 4.5VA  Operating temperature -20°C to +65°C  Storage temperature -40°C to +85°C Frequency range 20 kHz to 170 kHz Reaction time 10ms    Sensitivity Adjustable   Dimension 78x40x108 mm (L x W x H) Signal lasting time Unlimited / limited when loop is permanently covered 10 minutes Loop connection wiring Maximum length 20 meters twisted at least 20 times per...