Contrinex - DW-AD-501-M18 referenced sensor product produced by high technology. DW-AD-501-M18 is the result of a far more developed technology compared to similar regular products. We are one of the few companies which can present an offer for this product. Thanks to our large disturbiton network, we offer door delivery in most suitable conditions. Make an offer to us for DW-AD-501-M18 please contact us.