“USB LIGHT SENSOR” has been added to your basket. Continue shopping Product Price SKU Quantity Subtotal Drop Counter Attachment for photogate Drop Counter Attachment for photogate quantity × $36.30 SKU: ESD50092 Subtotal: $36.30 Remove $36.30 ESD50092 Drop Counter Attachment for photogate quantity $36.30 USB LIGHT SENSOR USB LIGHT SENSOR quantity × $184.48 SKU: ESD50186 Subtotal: $184.48 Remove $184.48 ESD50186 USB LIGHT SENSOR quantity $184.48 Coupon: Clear shopping cart Update cart Basket totals Subtotal $220.78 Total $220.78 Proceed to checkout Continue shopping