100% Brand New and High Quality. Features: Made of high-quality material, strong, durable, and with a wide effective range, providing you with a long service life. It automatically controls the drainage of water from the tank and the effective water level of the pool to prevent overflow or significant damage when the pump runs dry. With full or lack of water protection, this regulator protects the pump from burning out. It also controls the upper and lower pools simultaneously. Mounting on a guide rail can be installed in a distribution box for quality assurance. It comes with 3 probes that can be easily adjusted as needed to monitor the water level. Ideal for pressure and dyeing projects of well water, chemicals, beverages, wine, sugar, and other industries. 1 x Automatic Water Level Regulator only, other accessory demos in the picture are not included. Specification: Model: DF-96ED Material: Flame Retardant Size: approx. 88 x 49 x 67 mm / 3.46 x 1.93 x 2.64 inches Working Voltage: 220 V Current: 30 A Power: 2W Color: As the picture shows Quantity: 1 set Instructions: 1. Installation of the single control upper pool (water storage): A (red wire) is the highest water level of the upper pool. When the water level reaches point A, the probe connects to the water, and the regulator automatically turns off the pump. B (blue wire) is the lowest water level of the upper pool. When the water level is lower than point B, the probe disconnects from the water, and the regulator automatically turns on the pump to supply water. C (black wire) is the ground wire, placed in the lowest part of the pool but not at the bottom. It is recommended to place the ground wire lower than point B in a metal water tank. (The probe should stay away from the tank wall.) D (green wire) and E (yellow wire) are connected to C (black wire). 2. Installation of a single control lower pool (draining water): E (yellow wire) is the highest water level of the lower pool. When the water level reaches point E, the probe connects to the water, and the regulator automatically turns off the pump to drain water. D (green wire) is the lowest water level of the lower pool. When the water level is lower than point D, the probe disconnects from the water, and the regulator automatically turns on the pump to stop draining water. C (black wire) is the ground wire, placed in the lowest part of the pool but not at the bottom. It is recommended to place the ground wire lower than point D in a metal water tank. (The probe should stay away from the tank wall.) A (red wire) and B (blue wire) are disconnected. 3. Installation of no water protection: C and D are the lowest water level of the lower pool. When the water level reaches the lowest level, C or D will disconnect from the water, then the regulator will automatically turn off the pump. E (yellow wire) and C (black wire) are short-circuited. A (red wire) and B (blue wire) are disconnected. 4. Installation of common control of HIGH and LOW pool: A (red wire) is the highest water level of the upper pool. When the water level reaches point A, the probe connects to the water, and the regulator automatically turns off the pump. B (blue wire) is the lowest water level of the upper pool. When the water level is lower than point B, the probe disconnects from the water, and the regulator automatically turns on the pump to supply water. C (black wire) is the ground wire in the upper and lower pools, placed in the lowest part of the pool but not at the bottom. It is recommended to place the ground wire lower than point BD in a metal water tank. (The probe should stay away from the tank wall.) D (green wire) is the lowest water level of the lower pool. When the water level reaches point D, the probe disconnects from the water, and the regulator