https://www.isomil.de/en/ols_h_ols_s.WIKA
Optoelectronic level switch - OLS-S, OLS-H - ISOMIL GmbH
The model OLS optoelectronic level switch is used for the detection ... simply buy online from WIKA, your partner for pressure, temperature and level...
level switchoptoelectronicolsisomilgmbh