Sensor operated water flow control with separate filters and filter retainers

摘要: A sensor activated unit, e.g., a drinking fountain or wash basin, for preventing unwanted operation. The has power on reset circuit that makes use of resistor capacitor network and voltage threshold comparing device to create time delay will inhibit the operation unit nominal predetermined period when current is first supplied sensor. does not activate until user steps up within preset range distance from unit. Use made an infrared controlling Circuitry provided control commencement duration operation, down before it readied again.