My Account

Wish List (0)

Round Force-Sensitive Resistor (FSR) - Interlink 402

Product Code:ADA-0166

Ex.Tax £6.66

Availability: 4

Round Force-Sensitive Resistor (FSR) - Interlink 402
Round Force-Sensitive Resistor (FSR) - Interlink 402

Be the first to ask a question.

FSRs are sensors that allow you to detect physical pressure, squeezing and weight. They are simple to use and low cost. This sensor is a Interlink model 402 FSR with 1/2 diameter sensing region.

FSR's are basically a resistor that changes its resistive value (in ohms Ω) depending on how much its pressed. These sensors are fairly low cost, and easy to use but they're rarely accurate. They also vary some from sensor to sensor perhaps 10%. So basically when you use FSR's you should only expect to get ranges of response. While FSRs can detect weight, they're a bad choice for detecting exactly how many pounds of weight are on them.

FSRs are made of plastic and the connection tab is crimped on delicate material. The best way to connect to these is to simply plug them into a breadboard or use a clamp-style connector like alligator clips, female header, or a terminal block. It is possible to solder onto the tabs but you must be very fast because if your iron is not good quality or you dally even a few seconds, you will melt the plastic and ruin the FSR! Don't attempt to solder directly to your FSR unless you are absolutely sure you have the skills to do so.

For a full tutorial with wiring diagrams, code examples and project ideas, please read the FSR tutorial page!


  • Length:: 56.77mm/2.35in
  • Width: 18.48mm/0.73in
  • Thickness: 0.55mm/0.02in
  • Weight: 0.26g/0.01oz
Force (lb) Force (N) FSR Resistance
(FSR + R) Ω
Current thru FSR+R
Voltage across R
None None
0 mA
0.04 lb 0.2 N
40 KΩ
0.13 mA
1.3 V
0.22 lb 1 N
6 KΩ
16 KΩ
0.31 mA
3.1 V
2.2 lb 10 N
1 KΩ
11 KΩ
0.45 mA
4.5 V
22 lb 100 N
250 Ω
10.25 KΩ
0.49 mA
4.9 V


Write a review


Your Review

Note: HTML is not translated!


Bad           Good

are you happy?

please confirm the selections below are correct

The product is currently Out-of-Stock. Enter your email address below and we will notify you as soon as the product is available.