Hello All,
I am looking for a method which transmit OPEN/CLOSE signal from "A" Pump Station to "B" Pump Station.
(a) There is no wire connection between two Pump Stations, 1.5km apart.
(b) Ordinary wireless device is prohibited to use.
(c) Mobile telephones work at both Pump Stations.
(d) Internet service is not available at both Pump Stations, but probably set up newly if required.
Thank you!
I am looking for a method which transmit OPEN/CLOSE signal from "A" Pump Station to "B" Pump Station.
(a) There is no wire connection between two Pump Stations, 1.5km apart.
(b) Ordinary wireless device is prohibited to use.
(c) Mobile telephones work at both Pump Stations.
(d) Internet service is not available at both Pump Stations, but probably set up newly if required.
Thank you!
