Shops use the words indicator and controller as if they were the same shelf. They are not. An indicator answers "how much water is in the tank". A controller answers "turn the motor on or off". You can want the first without the second. You cannot get automatic filling from the first alone. People who buy an indicator and then complain that the tank still overflows have bought a display. The motor never received a command.
Which Water Gauge box is which
The sensor and level manager are the indicator side, with the reading on the Android app instead of only on a wall box. The level manager is solar, uses a SIM already fitted, and the test includes a notification when a level is reached. That notification is still information. It does not open a contactor. The controller is the controller side. It sits at the starter, uses an AC adapter, and the app test is to switch the motor and then to try automatic control. Thresholds for on and off are listed on the home page. Together they are a wireless water automation system. Apart, they are two products with two jobs.
A traditional wired indicator often includes both jobs in one cabinet because the cable already ends at the starter. Splitting them is what lets the level travel on the mobile network while the starter wiring stays local. Wireless versus wired is that cable story. Do not let the split confuse the purchase. If the sentence you care about is "stop the pump when full", you need the controller. If the sentence is "tell me the level while I am out", you need the level manager and the app. Say the sentence when you ask for a free estimate.
Alerts are not control
A notification can say the tank is full. If you are asleep or away from the switch, the motor continues. That is why overflow articles insist on the motor command. Read stopping overflow. The same logic applies to a low tank: an alert tells you, the controller can start the motor if automatic control has been set up and tested. The site asks for that test. It does not claim the motor moves itself with no controller installed.
Schedules are a third behaviour. A schedule can run the motor at a time of day even if you never look at the level. It can also overflow a tank that was already nearly full. The home page lists schedules and level thresholds as separate ideas. Use the level when the tank state matters. Use a schedule when the clock matters. Ask to see both screens. They are not printed in this article.
How to ask for the right quote
Write "indicator only" or "indicator and motor control". Add the number of tanks and the starter type. Call +91 70004 65454 or the contact page. There is no price on the site. What changes cost explains why one number would be misleading. The office is in Indore. See the level controller page, the pump controller page, how it works, and the FAQ. The Android package is com.waterguage.water_guage. Synetal Solutions Pvt Ltd is the company named on the home page. No iOS app is described, so the indicator on a phone means an Android phone unless you are told otherwise in a reply from support.
Use the words in the estimate so they cannot collapse back into one. "Send the level to the Android app" is the indicator line. "Stop the filling motor when that level is reached" is the controller line. A reply that prices only the first line has not sold you overflow control. A reply that prices only the second line has sold you a remote switch. Neither reply is wrong if it matches what you asked. The mistake is asking for a controller and accepting an indicator, or the reverse, because the shop used one name. Water Gauge's site already uses two product pages. Point at them. If a later price list appears, it should keep the same split, or buyers will be back in the same confusion this article is trying to end.
Keep both words in your own notes after the call. If the person on the phone says only "controller", ask whether the tank reading is included. If they say only "indicator", ask whether the motor will stop. Those two questions take ten seconds and they prevent the overflow you were trying to buy your way out of. The product pages on this site already use the two names. Your estimate should use them too.