Control your Holding Tank from one location. This device is a programmable timer designed as a single Holding Tank Controller and can be purchased with the Optional Stylish Control Panel. The unit has two inputs (Tank Low Sensor & Tank High Sensor) and two outputs (Holding Tank Pump and an Aux output). The unit has two modes of operation, Automatic and Manual. When power is turned ON the mode is set to Automatic therefore, when the tank High Sensor is activated the Tank Pump will startup and run automatically for the programmed time or until the Tank Low Sensor is activated, (if fitted) If switched to Manual mode, the 'Tank Full' LED will flash indicating the tank is full but the pump out cycle will NOT start until the 'Pump On' button is pushed. Once the pump is activated it will run until the programmed time is finished OR (if fitted) The 'Low ' sensor is activated OR The pump On/Off button is pushed again. From one central location on your boat you can: - turn holding tank macerator pump on/off - visual indication when holding tank is full - set holding tank macerator pump discharge cycle times NOTE: Both the Control Panel and the Tank Low Sensor are optional. The Control comes in either a Black, White, Brushed Stainless or Brass finish. The Control Panel and Control Unit are separate and can be connected up to 20 metres apart making this an ideal solution. Supply Voltage: 12 ~ 32 Volts DC (Auto sensing) | Quiescent Current: 45 Miliamps Macerator pump up to a maximum output load of : 80 amps @ 12 Volts | Aux Output Load: 20 amps @12 Volts Voltage & EMI Protected | Data Retention: 40 years (without power) | Model: ST-660