Infrared Motion Sensor (pir sensor, auto light switch) 1.Adjustable Sound-control sensitivity Infrared Motion Sensor with Adjustable Sound-control sensitivity (pir sensor, auto light switch)1. SMD Technology Sensor2. Multiple-function3. Convenient Installation4. Multi-working mode5. Wide working voltage6. Adjustable Time Delay: 10±3sec~8±2min7. Adjustable Sound-control sensitivity8. CE, GS ...