Logic for dispenser Circuit:

1. The module will keep the pump off until the hand is detected by sensor.
2. When the sensor detects hand, the module will switch on the pump and the pump remains on until time expires (this time is set using potentiometer).
3. Once the time expires, the pump will remain off even if the hand is below the sensor, this will prevent the over dispensing of sanitizer.
4. When the sensor detects hand, the module will switch on the pump and if the hand is removed before the time period set by the user, the module will switch off the pump as soon as the hand is removed, preventing wastage for sanitizer.Example:Consider Module time is set to 2 seconds using an on_time potentiometer.
Case 1: Hand is kept below the sensor and pump starts, but the user didn’t remove the hand for next 4 seconds then
Operation:
The module will switch on the pump as soon as the hand is detected and keep the pump on for 2 seconds, then the module will switch off the pump and keep the pump off until hand is removed. Hence preventing over dispensing of sanitizer. Next time, when the hand is again detected pump will start and the same logic is implemented.
Case 2: Hand is kept below the sensor and the pump starts, but the user removes the hand after 1 second only.Operation:
the module will switch on the pump as soon as a hand is detected and keep the pump on for 1 second, but as soon as it detects the hand is removed, it will switch off the pump. Hence preventing the wastage of sanitizer

Contactless Sanitizer Dispenser Module - TSOP Based

Features:
    • Plug and play type.
    • Suitable for Indoor/ outdoor (no effect of Sunlight)
    • Directly connect 9v to 24v pump.
    • Facility to Adjust range 5 mm to 150 mm using Potentiometer.
    • Facility to Adjust ON time 0 sec to 20 sec after detection using Potentiometer.
    • Power Input 7v to 24v.
    • Power Indicator LED.
    • Detection/Pump On Indicator LED.

Contactless Sanitizer Dispenser Module - IR Based

Features:
  • Plug and play type.
  • Directly connect 9v to 24v pump.
  • Facility to Adjust range 5 mm to 100 mm using Potentiometer.
  • Facility to Adjust ON time 0 sec to 5 sec after detection using Potentiometer.
  • Power Input 7v to 24v.
  • Power Indicator LED.
  • Detection/Pump On Indicator LED.
  • Suitable for Indoor or outdoor in shadow

Contactless Sanitizer Dispenser Module - Ultrasonic Based

Features:
  • Plug and play type.
  • Suitable for Indoor/ outdoor (no effect of sunlight)
  • Directly connect 9v to 24v pump.
  • Facility to Adjust range 5 mm to 200 mm using Potentiometer.
  • Facility to Adjust ON time 0 sec to 5 sec after detection using Potentiometer.
  • Power Input 7v to 24v.
  • Power Indicator LED.
  • Detection/Pump On Indicator LED.

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Contact-less Sanitizer Dispenser Circuit - TSOP Based