Wireless Pulse Counter 3 (WPC3)

399 SEK
Wireless Pulse Counter 3  (WPC3)
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Wireless Pulse Counter 3 (WPC3)

399 SEK
Improvements compared to the old WPC2:
  • LED-pulse detector is a separate module so that the transmitter can be placed in a more optimal position
  • Support multiple 1-wire devices
  • Less than 13uA current consumption between transmissions
The WPC3 is fully supported by RFXtrx433(E) and thus also supported by Domoticz as a RFXMeter.
The WPC3 is detected by Tellstick DUO/NET, but a few simple calculations is needed on the receiving end to convert the data to Energy and Power consumption. Make sure that the software you are using can handle this.

The sensor is very versatile since you can use it to count pulses from any device you can think of, and send the value wirelessly to the RFXtrx433(E) from RFXcom, or Tellstick.
The primary usage is however to connect it to a Electricity meter and count the blinks that is proportional to the consumed energy.
The sensor could for example be;
  • Phototransistor - to detect blinking light (this is included)
  • S0-output from an electric meter
One can also connect it to other switches but care need to be taken to remove bouncy signals.
  • Reed switch* - often used in water meters
  • Hall-effect switch - to detect magnetic field changes
  • Mechanical switch* - open/close a door

If you need to mount the WPC3 outside your electricity meter box for transmission range reasons, you can easily do so by putting the sensor on a cable.

The package contain:
1pcs Wireless Pulse Counter (WPC3)
1pcs Resistor 330 Ohm if connected to S0 output)
1pcs Resistor 4k7 Ohm if connected to mechanical switch
1pcs Resistor 100k Ohm to decrease detector sensitivity
1pcs Resistor 220k Ohm already mounted
1pcs Blink sensor
The only additional thing needed to make it transmit, is a 5V source that should be connected to either the screw terminals or through the micro USB connector. The USB connector is only there for power feed.
Download the manual here.
Download Fusion 360 model here.

*) Both reed switches and mechanical switches are usually quite bouncy. One transition is usually counted as multiple transitions. It is highly recommended to add a debouncing circuit.