Sensor Capacitivo M8 De Curto 0 A 4mm, Ajustável, Pnp/npn, Não Enterrado, Sensor De Proximidade Declive, 45 Mm De Comprimento - Conectores - AliExpress
Capacitive sensors to detect coffee bean level
BCS M08T4E2-PSM15C-S49G BALLUFF | BALLUFF Capacitive Barrel-Style Proximity Sensor, M8 x 1, 1.5 mm Detection, PNP Output, 11 → 30 V dc, IP65 | 902-7420 | RS Components