Products for USB Sensing and Control Canada flag
Products for USB Sensing and Control

sales inquiries

quotes, distributor information, purchase orders

technical inquiries

support, advice, warranty, returns, misshipment

website inquiries

corrections or suggestions


Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9


Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
+1 403 282-7335

Precision Voltage Sensor

ID: 1135_0B

This voltage sensor measures ±30V DC and connects to an Analog Input or VINT Hub port.


Quantity Available: 1000+

Qty Price
5 $16.15
10 $15.30
25 $13.60
50 $11.90
100 $11.05

For new systems and projects, we recommend using the following VINT products instead of this one.

Note: The 1135_0B is identical to the 1135_0, except that you have the option of which size of Phidget cable to include.

The Voltage Sensor measures the differential voltage between the input terminals and outputs the difference proportionally. The maximum differential voltage that can be measured accurately is ±30V.

Interface Boards and Hubs

This sensor can be read by any Phidget with an Analog Input or VINT Hub port. It will connect to either one using a Phidget cable. VINT Hub ports can behave just like Analog Inputs, but have the added flexibility of being able to be used as digital inputs, digital outputs, or ports to communicate with VINT devices. For more information about VINT, see the VINT Overview page.

Product Voltage Inputs
Part Number Price Number of Voltage Inputs Voltage Input Resolution (bits)
PhidgetInterfaceKit 8/8/8 Mini-Format
$80.00 8 10 bit
PhidgetInterfaceKit 2/2/2
$50.00 2 10 bit
PhidgetInterfaceKit 8/8/8
$80.00 8 10 bit
PhidgetInterfaceKit 8/8/8
$80.00 8
PhidgetInterfaceKit 8/8/8 w/6 Port Hub
$110.00 8 10 bit
PhidgetTextLCD 20X2 : White : Integrated PhidgetInterfaceKit 8/8/8
$70.00 8 10 bit
8x Voltage Input Phidget
$20.00 8 12 bit
VINT Hub Phidget
$30.00 6 (Shared) * 15 bit
VINT Hub Phidget
$40.00 6 (Shared) *** 15 bit
1-Port VINT Hub Phidget
$24.00 1 (Shared) ** 16 bit
Wireless VINT Hub
$60.00 6 (Shared) * 16 bit
$120.00 6 (Shared) * 16 bit

Phidget Cables

This sensor requires a Phidget cable to connect it to an InterfaceKit or Hub. You can solder multiple cables together in order to make even longer Phidget cables, but you should be aware of the effects of having long wires in your system. See a full list of Phidget cables below.

Product Physical Properties
Part Number Price Cable Length
Phidget Cable 60cm
$2.00 600 mm
Phidget Cable 10cm
$1.50 100 mm
Phidget Cable 350cm
$3.00 3.5 m
Phidget Cable 120cm
$2.25 1.2 m
Phidget Cable 180cm
$2.75 1.8 m
Phidget Cable 30cm
$1.75 300 mm
Phidget Cable 90cm
$2.00 900 mm
Phidget Cable 150cm
$2.50 1.5 m


You can protect your board from dust and debris by purchasing an enclosure. An enclosure will also prevent unintentional shorts caused by objects touching the pins on the bottom of the board or any terminal screws.

Product Physical Properties
Part Number Price Material
Acrylic Enclosure for the 1135
$7.00 Clear Acrylic

Getting Started

Welcome to the 1132 user guide! In order to get started, make sure you have the following hardware on hand:

Next, you will need to connect the pieces:

1135 0 Connecting The Hardware.jpg
  1. Connect the 1135 to the HUB0000 with the Phidget cable.
  2. Connect a voltage source to the 1135. If you connect the supply backwards, the reported voltage will be negative.
  3. Connect the HUB0000 to your computer with the USB cable.

Now that you have everything together, let's start using the 1135!

Using the 1135

Phidget Control Panel

In order to demonstrate the functionality of the 1135, we will connect it to the HUB0000, and then run an example using the Phidget Control Panel on a Windows machine.

The Phidget Control Panel is available for use on both macOS and Windows machines. If you would like to follow along, first take a look at the getting started guide for your operating system:

Linux users can follow the getting started with Linux guide and continue reading here for more information about the 1135.

First Look

After plugging in the 1135 into the HUB0000, and the HUB0000 into your computer, open the Phidget Control Panel. You will see something like this:

HUB0000 Panel.jpg

The Phidget Control Panel will list all connected Phidgets and associated objects, as well as the following information:

  • Serial number: allows you to differentiate between similar Phidgets.
  • Channel: allows you to differentiate between similar objects on a Phidget.
  • Version number: corresponds to the firmware version your Phidget is running. If your Phidget is listed in red, your firmware is out of date. Update the firmware by double-clicking the entry.

The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.

Voltage Input

Double-click on a Voltage Input object in order to run the example:

1018 Sensors VoltageInput.png

General information about the selected object will be displayed at the top of the window. You can also experiment with the following functionality:

  • Modify the change trigger and/or data interval value by dragging the sliders. For more information on these settings, see the data interval/change trigger page.
  • Select the 1135 from the Sensor Type drop-down menu. The example will now convert the voltage into differential voltage (V) automatically. Converting the voltage to differential voltage (V) is not specific to this example, it is handled by the Phidget libraries, with functions you have access to when you begin developing!

Technical Details


The 1135 measures the differential voltage between the input terminals and outputs the difference proportionally. The maximum differential voltage that can be measured accurately is ±30V. When the positive and negative inputs are equal, the voltage output value is 2.5V. When the positive input is 30V greater than the negative input, the voltage output is 4.5V and when the positive input is 30V less than the negative input, the voltage output is 0.5V.

When measuring voltage levels below 5V, you'll have more accuracy if you connect the leads directly to the voltage input of the HUB0000 (or compatible product).

Since the 1135 can measure a differential voltage, the common mode rejection (CMR) is an important specification. CMR refers to the amount of voltage that both input terminals of a differential amplifier can be offset without affecting the output gain. For example, if the positive terminal sees a voltage of 7V and the negative terminal sees a voltage of 5V, then the CMR would be 5V and would output a value of 2V at unity gain. For the 1135, it is able to measure the differential voltage of ±10V with a CMR of 40V while keeping the accuracy within 2%. Please note that the error specifications do not include the error introduced by the Analog to Digital Conversion on the Analog Input. (if you are using the 1135 with a PhidgetInterfaceKit) The majority of error introduced by the Analog to Digital conversion is from the error in the voltage reference (0.5% max), and the limitation of resolution in the analog-to-digital converter. The best accuracy can be achieved by using a 2 or more point calibration of your system - effectively calibrating the 1135 and the PhidgetInterfaceKit in a single step. If you are calibrating, be sure to use a good quality multimeter to determine the voltage being applied.


The Phidget libraries can automatically convert sensor voltage into differential voltage (V) by selecting the appropriate SensorType. See the Phidget22 API for more details. The Formula to translate the analog voltage returned by the 1135 into differential voltage is:

where Vdiff is defined as Vpositive - Vnegative, and Vsens is the voltage returned by the 1135. For maximum accuracy, measure the sensor voltage when measuring a 0V source and replace the "2.5" in this equation with the zero value that you've measured.

Phidget Cable


The Phidget Cable is a 3-pin, 0.100 inch pitch locking connector. Pictured here is a plug with the connections labelled. The connectors are commonly available - refer to the Analog Input Primer for manufacturer part numbers.

What to do Next

  • Programming Languages - Find your preferred programming language here and learn how to write your own code with Phidgets!
  • Phidget Programming Basics - Once you have set up Phidgets to work with your programming environment, we recommend you read our page on to learn the fundamentals of programming with Phidgets.

Product Specifications

Sensor Properties
Sensor Type Voltage (DC)
Controlled By Voltage Input (0-5V)
Sensor Output Type Non-Ratiometric
Voltage Sensor
Voltage Difference Max ± 30 V DC
Relative Input Voltage Max ± 40 V DC
Measurement Error Max 0.5 %
Sensor Response Time Max 10 ms
Voltage Offset Max ± 100 mV DC
Electrical Properties
Supply Voltage 5 V DC
Current Consumption Max 3.6 mA
Sensor Input Impedance 1 MΩ
Output Voltage Min 0 V DC
Output Voltage Max 5 V DC
Physical Properties
Recommended Wire Size 16 - 26 AWG
Operating Temperature Min -40 °C
Operating Temperature Max 85 °C
Customs Information
Canadian HS Export Code 8473.30.00
American HTS Import Code 8473.30.51.00
Country of Origin CN (China)


Product History

Date Board Revision Device Version Packaging Revision Comment
March 2010 0 N/A Product Release
December 20170 N/A B Removed Phidget cable from packaging

This device doesn't have an API of its own. It is controlled by opening a VoltageInput channel on the Phidget that it's connected to. For a list of compatible Phidgets with Voltage Inputs, see the Connection & Compatibility tab.

You can find details for the VoltageInput API on the API tab for the Phidget that this sensor connects to.

Code Samples

Example Options


				Make your selections to display sample code.

Have a look at our DC voltage sensors:

Product Voltage Sensor Sensor Properties
Part Number Price Voltage Difference Max Input Voltage Min (DC) Input Voltage Max (DC)
Precision Voltage Sensor
$17.00 ± 30 V DC
Versatile Input Phidget
20-bit (±40V) Voltage Input Phidget
$50.00 ± 40 V DC
(±40V) Voltage Input Phidget
$25.00 ± 40 V DC
(±1V) Voltage Input Phidget
$25.00 ± 1 V DC