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Continue to ChatELMO TRIAL485V9,9GHZ SENSORE DOPPIA TECNOLOGIA DA ESTERNO SU BUS RS485 VERTICALE 15MT 9,9GHZ EN50131 https://www.mtcontracts.it/product/sensore-doppia-tecnologia-da-esterno-su-bus-rs485-verticale-15mt-99ghz-en50131/