Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	Q89
Component Type	Collision Switch / Limit Sensor
Operating Voltage	3.3V - 5V DC
Interface	Digital Output (DO)
Connector Type	Dupont Pin Header
Compatible Platforms	Arduino, Raspberry Pi, ESP32
Material	PCB, Plastic Actuator
Dimensions	24mm x 16mm x 10mm
Weight	3.5 grams
Package Includes	1x Q89 Module, 3x Dupont Lines

6 reviews

Anonymous

Mar 28, 2026

Rating: 4/5

Good value, slightly stiff actuator

The sensor is reliable and detects collisions well. The only minor issue is that the switch button feels a bit stiff, requiring a firm push to trigger, but it hasn't affected performance.

Anonymous

Mar 22, 2026

Rating: 4/5

Solid component

Does exactly what it says on the tin. No documentation included in the box, but finding pinout diagrams online was trivial. Works great with 5V logic.

Anonymous

Mar 12, 2026

Rating: 5/5

Perfect for my obstacle avoidance robot

This Q89 module works flawlessly with my Arduino Uno. The detection range is consistent, and the Dupont lines made wiring incredibly easy. Highly recommended for beginner robotics projects.

Anonymous

Mar 11, 2026

Rating: 5/5

Reliable limit switch

Using this as a limit switch on a small CNC plotter. It triggers precisely every time. The compact size fits perfectly in tight spaces.

Anonymous

Mar 09, 2026

Rating: 5/5

Easy to use for beginners

I am new to electronics, and this module made adding collision detection to my car very simple. The included wires are a nice touch.

Anonymous

Mar 08, 2026

Rating: 5/5

Great educational tool

Bought this for my son's science project. It was easy to integrate into his code, and the build quality seems durable enough to withstand multiple test crashes.

5 FAQ

Q: Does the output go HIGH or LOW when pressed?

A: By default, the output goes LOW when the switch is pressed (active low), assuming you are using the standard DO pin configuration.

Q: What is the maximum current this switch can handle?

A: The onboard switch is designed for signal-level applications. We recommend keeping the load under 50mA to ensure longevity and prevent damage.

Q: Can I use this underwater?

A: No, this module is not waterproof. It is intended for indoor use or protected environments only. Exposure to water will damage the electronics.

Q: Are the Dupont lines male-to-female or female-to-female?

A: The included Dupont lines are Female-to-Female, allowing you to connect the module directly to male header pins on your microcontroller.

Q: Is this module compatible with 3.3V microcontrollers like the ESP8266?

A: Yes, the Q89 module operates within a 3.3V to 5V range, making it fully compatible with ESP8266, ESP32, and standard 5V Arduinos.

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