Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | SR602 |
| Detection Angle | 100 degrees cone angle |
| Operating Voltage | DC 3.0V - 5.0V |
| Current Consumption | < 60 microamps |
| Output Signal | High level output upon detection |
| Delay Time | Adjustable via external resistor/capacitor |
| Dimensions | 18mm x 12mm x 7mm |
| Lens Type | Fresnel Lens included |
| Operating Temperature | -20°C to +70°C |
| Application | Automatic lighting, security alarms, toy activation |
Anonymous
Mar 25, 2026
Rating: 4/5
Works as described
Does exactly what a PIR sensor should do. The only reason for 4 stars instead of 5 is that the included lens feels a bit fragile, so handle with care during assembly.
Anonymous
Mar 17, 2026
Rating: 5/5
Perfect for my Arduino project
This SR602 module worked flawlessly with my Arduino Uno. The sensitivity is impressive, and it detected movement consistently from about 4 meters away. Easy to wire up.
Anonymous
Mar 13, 2026
Rating: 5/5
Reliable component
Bought five of these for a robotics class. All of them functioned perfectly out of the box. The pinout is standard and easy to understand.
Anonymous
Mar 11, 2026
Rating: 4/5
Good value, small size
Very compact which was exactly what I needed for a tight enclosure. It takes a little trial and error to get the delay timing right, but once configured, it works great.
Anonymous
Mar 10, 2026
Rating: 5/5
Highly sensitive
I was worried it might be too sensitive and trigger falsely, but it handles ambient temperature changes well. Great for automatic hallway lights.
Anonymous
Mar 01, 2026
Rating: 5/5
Excellent for beginners
If you are new to electronics, this is a great starter sensor. There are plenty of tutorials online for the SR602, and this specific unit matched all the specs perfectly.
Q: Does this come with mounting hardware?
A: This item includes the sensor module and the Fresnel lens cap. Mounting screws or adhesive are not included, but the module has two standard mounting holes for easy installation.
Q: Can this sensor detect motion through glass?
A: No, pyroelectric IR sensors generally cannot detect body heat through glass because standard glass blocks infrared radiation. The sensor needs a direct line of sight or a specialized IR-transmissive window.
Q: Is this compatible with 3.3V logic systems like ESP32?
A: Yes, the module operates between 3.0V and 5.0V, making it fully compatible with 3.3V systems such as the ESP32 or ESP8266 without needing a level shifter.
Q: What is the maximum detection range?
A: Under ideal conditions with a standard Fresnel lens, the SR602 can detect human movement up to approximately 5 to 7 meters. Range varies based on lens quality and environmental temperature.
Q: How do I adjust the sensitivity?
A: Sensitivity and delay time are typically adjusted by changing the values of the external resistors and capacitors connected to the designated pins on the module, as detailed in the datasheet.
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