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With this relay pcb you can simply realize different applications with an electronic coin validator. Depending on configuration of the electronic coin validator you can contact potential free both relays contacts for timing circuits, expenditures for impulse, sales procedures use etc. with two prices.
It is possible to activate the signal "end of water notice" which causes the flow of water to be interrupted for 2 to 60 seconds prior to the end of service. It is useful for alerting the customer to the remaining time available and allowing them to finish bathing.
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