brand new and high quality. Features: Made of high quality material, solid, durable and wide power range, serve you for a long for time. It automatically controls for tank water, drainage, and effective pool water level to prevent water overflow or pump idling high damage. With water full or shortage for protection, this controller protects the pump from burning. It also controls the upper and lower pools simultaneously. Guideway mounting can be installed in distribution box for quality assurance. It comes with 3 probes, which are easily adjusted according to demand to realize water level control. Great for well water project, printing and dyeing, chemical, food, beverage, wine, sugar and other industries. 1 automatic water level controller only, other accessories demo in the picture is not included! Specification: Model: DF-96ED Material: Flame retardant Size: app.88 x 49 x 67mm/3.46 x 1.93 x 2.64in Working voltage: 220V Current: 30A Power: 2W Color: As picture shown Quantity: 1 Set Instructions: 1. Single-control Upper pool (water storage) installation: A(Red Wire) is the highest water level in the Upper pool. When water level gets to A point, the probe connects with water and the controller automatically turns off the pump. B(Blue Wire) is the lowest water level in the Upper pool. When water level is lower than B point, the probe disconnects with water and the controller automatically turns on the pump to feed water. C(Black Wire) is the earth wire placed in lowest part of pool, but not in the bottom. It is commended that the earth wire should be placed lower than B point in a metal water for tank. (The probe should keep away from the for tank wall.) D(Green Wire) and E(Yellow Wire)are connected with C (Black Wire). 2. Single-control Down pool(drain water)installation: E(Yellow Wire) is the highest water level in the Down pool. When water level gets to E point, the probe connects with water and the controller automatically turns off the pump to drain water. D(Green Wire) is the lowest water level in the Down pool. When water level is lower than D point, the probe disconnects with water and the controller automatically turns on the pump to stop draining water. C(Black Wire) is the earth wire placed in lowest part of pool, but not in the bottom. It is commended that the earth wire should be placed lower than D point in a metal water for tank. (The probe should keep away from the for tank wall.) A(Red Wire) and B(Blue Wire) are disconnected. 3. Lack of water for protection installation C and D are the lowest water level in the Down pool. When water level gets to the lowest level, either C or D disconnects with water, then the controller automatically turns off the pump. E(Yellow Wire) and C(Black Wire) are short circuit. A(Red Wire) and B(Blue Wire) are disconnected. 4. Joint control UP and DOWN pool installation A(Red Wire) is the highest water level in the Upper pool. When water level gets to A point, the probe connects with water and the controller automatically turns off the pump. B(Blue Wire) is the lowest water level in the Upper pool. When water level is lower than B point, the probe disconnects with water and the controller automatically turns on the pump to feed water. C(Black Wire) is the earth wire in the Upper and Down pool, placed in lowest part of pool, but not in the bottom. It is commended that the earth wire should be placed lower than B, D point in a metal water for tank. (The probe should keep away from the for tank wall.) D(Green Wire) is the lowest water level in the Down pool. When water level gets to D point, the probe disconnects with water and the controller automatically turns on the pump to stop draining water. E(Yellow Wire) is the highest water level in the Down pool. When water level gets to E point, the probe connects with water and the controller automatically turns off the pump to drain water. Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Automatic Water Level Controller 3 x Probe