10pcs Lens for Pyroelectric Sensors Shop: There may be some days to weeks delays in deliveries. Thank you for understanding!! » All Products » 10pcs Lens for Pyroelectric Sensors This lens is for pyroelectric sensors which is used to detect presence of a person. SKU: CQY2859618191 Price: 0.91 $ Old Price: 1.01 $ Product in stock SSL Certificate Quantity Updating cart... This lens is mounted in pyroelectric sensor which can be used in person detection. Specifications Circumference: 23 mm to 24 mm Weight: 1 g Related Products MPR121 Capacitive touch sensor breakout PT100 Temperature Sensor with 0.5 m cable, 0.5 Accuracy Green MAX30100 Heart Rate Sensor Module Relay with Light Sensor TM902C Digital Thermometer