Every Sap Spy sensor plugs into a Sensor Hub or a Universal Sensor Node. Pick the sensor and the device it goes on; the node and hub use different connectors, so the "for" in each name matters.
Tank level. A stainless submersible sensor on a 15 ft cable with a 15 ft extension (30 ft total), reading 0 to 100 percent of any tank you calibrate it to. We recommend the submersible for every tank; the only chore is wiping it down when you clean the tank. The ultrasonic sensor with its mounting bracket is for open-top tanks on an electric releaser (15 ft cable, no extension).
Vacuum. A digital sensor for the Universal Sensor Node, 0 to 29.9 inHg. Put one at the end of each mainline and the app shows which line dropped. For vacuum at a Sensor Hub, nothing to add: the hub has its own.
Pressure. Digital, for the Universal Sensor Node. 0 to 725 PSI watches your RO, or a transfer line that is building pressure because it froze. -14.5 to 14.5 PSI reads the level of a tall silo tank (up to 33 ft) and, paired with a vacuum sensor at the top, the level of a vacuum tank.
Water meters are their own product: Water Meter, Universal Node compatible.
