Wireless Current Sensor - PS-3212



Measure currents of up to 1 A with built-in protection for the sensor against overload and transmit the collected data wirelessly to your computers, Chromebooks, tablets or smart phones.

The wide current range allows for introductory and advanced explorations of the fundamental concepts of electricity and basic circuits. Combine with the Wireless Voltage Sensor to explore Ohm's Law, series & parallel circuits and much more.

Since current can only exist in a complete circuit, the Wireless Current Sensor must be connected in series as part of that circuit in order to measure current.  This helps students to understand how an ammeter functions.

Note:  Because the Wireless Current Sensor has a very low resistance (0.1 Ω) it should not be connected directly across a battery or other voltage source without a resistive load. Doing so may damage the sensor.

Special Features

  • Simplicity: just pair and go, no cables and adapters to manage
  • Variable sampling rate for capturing small fast changes or experiments that run for hours, days, or weeks.
  • High speed sampling available via USB connection in "burst mode"
  • Long-lasting rechargeable battery.
  • Logging mode - Log current data directly onto the sensor for long-term experiments.

Bluetooth 4 Connectivity

Required Software:

PASCO products that use Bluetooth® 4 technology - wireless sensors, smart carts, and the AirLink Interface - require the latest versions of our software.

PASCO Capstone is available for Mac and Windows. SPARKvue  is available for Mac, Windows, iOS, Android and Chromebooks.

Additionally, the Wireless Motion Sensor and Wireless Smart Carts can be connected via Bluetooth and used with our MatchGraph! app.

Compatibility/System requirements

Any current model Chromebook, Mac, iPad, iPhone, Android tablet or Android phone will support direct connection to PASCO Bluetooth 4 devices. Also, any Windows 10 device w/ Creators Edition 1703 or later will support direct connection.

Chromebook users MUST have the latest firmware updates for ALL wireless sensors in order to use them without the USB Bluetooth Adapter. Full information.

All other windows computers/tablets, older Macs, and Chromebook users without updated sensor firmware currently require the PS-3500 USB Bluetooth 4.0 Adapter to connect to PASCO’s Bluetooth 4 devices.

Full compatibility details are available, including compatibility information for older computing devices.


Independent datalogging 

Long term data collection directly on the sensor

In logging mode wireless sensors collect data to their onboard memory for hours, days, weeks or even months at a time without needing to be connected to a computer, tablet, Chromebook or smartphone.

When the experiment is concluded, simply connect the sensor to a device running PASCO software and download all the measurements it recorded.



New Storage Option

Simplify storage & inventory

Custom Gratnells Tray for Wireless Voltage Sensors (PS-3588)

The precision cut inserts are designed to accommodate up to 10 Wireless Voltage and/or Wireless Current Sensors

See the buying guide below for details


  • Current sensor
  • Red shrouded banana to alligator clip test lead
  • Black shrouded banana to alligator clip test lead
  • USB Cable (for recharging and optional direct connection)
  • Specifications

    • Low Range± 0.1 A
    • High Range ± 1 A
    Max Sampling Rate
    • 1000 samples/second via Bluetooth
    • 100,000 samples/second via USB (burst mode)
    Input Resistance
    • 0.1Ω
    • Rechargeable Lithium-Polymer
    • Expected life of 3-4 months on a single charge with normal use
    • Yes
    • Direct USB or Bluetooth® Smart (Bluetooth 4.0)
    Max wireless range
    • 30 m (unobstructed)

    Buying Guide

    USB Bluetooth Adapter

    Windows devices, Chromebooks and older Macs lack native Bluetooth® Smart support and require an adapter to use PASCO wireless products.

    All current model Macs, iPads, iPhones, Android tablets or phones support direct connection to PASCO Bluetooth Smart devices and do not require the adapter.

    Full compatibility details are available.

    USB Bluetooth Adapter   PS-3500
    Shrouded Alligator Test Leads

    If necessary, replacement leads are available.

    Shrouded Alligator Test Leads   PS-3544
    Single Port USB Wall Charger
    10 Port USB Charging Station

    The Wireless Current Sensor includes a USB cable for charging when connected to a computer or other powered USB port. 

    But if you'd like a wall charger there are single and 10 port options.

    Single Port USB Wall Charger   PS-2575
    10 Port USB Charging Station   PS-3501
    Electrode Support

    Use the Electrode Support to keep leads from the Wireless Current Sensor in place during experiments.

    Electrode Support   PS-3505

    Software Required

    This product requires or recommends PASCO software for data collection and analysis. Either SPARKvue software or PASCO Capstone software may be used.