THE POOL SENTRY maintains the water level of a pool, spa, or pond–automatically and without needing to be attended. The supply water stays on at all times when the Pool Sentry is in the pool. As the float drops, the water turns on. When the float reaches its set height, the water shuts off. The float adjusts to the desired level. Because the hose is under constant water pressure, it is essential that the customer uses a heavy-duty, reinforced hose. Visit Rola-Chem.com or where you ever you buy pool supplies.

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