We are offering sharp sensor gp2y0a21. Feature summary operating voltage: 4.5 v to 5.5 v average current consumption: 30 ma (typical) distance measuring range: 10 cm to 80 cm (4" to 32") output type: analog voltage output voltage differential over distance range: 1.9 v (typical) response time: 38 ± 10 ms package size: 29.5×13.0×13.5 mm (1.16×0.5×0.53") weight: 3.5 g (0.12 oz).