Skip to content
Gravity: Digital Microwave Sensor (Motion Detection)
Price:
Sale price
£8.50
Stock:
Quantity:
Awesome Extras
The microwave sensor applies the Doppler effect to detect moving objects using microwaves. This differs from the method used by a regular infrared (IR) sensor as microwave is sensitive to a variety of objects that are microwave-reflective, and its sensor readings are not affected by the ambient temperature.
This type of microwave sensor is widely used in industrial, transportation and civil applications such as measuring vehicle speed, liquid levels, automatic door motion detection, automatic washing, production line material detection and car reversing sensors etc.
This type of microwave sensor is widely used in industrial, transportation and civil applications such as measuring vehicle speed, liquid levels, automatic door motion detection, automatic washing, production line material detection and car reversing sensors etc.
The microwave detection method has the following advantages compared to other methods:
- Non-contact detection
- Readings not affected by temperature, humidity, noise, air, dust or light - suitable for harsh environments
- Strong resistance to radio frequency interference
- Low output, unharmful to human
- Wide detection range and high velocity
- Supports non-living object detection
Connection Example - DFRduino UNO R3
Specifications
- Working Voltage: 5V + 0.25V
- Working Current (CW): 60mA max., 37mA typical
- Interface: Gravity 3-Pin interface（Digital）
- Size: 48.5 x 63mm
- Emission parameters:
- Detection Distance: 2-16M continuously adjustable
- Emission Frequency: 10.525 GHz
- Precision Frequency Setting: 3MHz
- Output Power (minimum): 13dBm EIRP
- Harmonic Emission: < -10dBm
- Average Current (5%DC): 2mA typ
- Pulse Width (Min.): 5uSec
- Load Cycle (Min.): 1%
- Reception Parameters:
- Sensitivity:(10dB S/N ratio) 3Hz to 80Hz
- Bandwidth: -86dBm
- 3Hz to 80Hz Bandwidth Clutter: 10uV
- Antenna Gain: 8dBi
- Vertical 3dB Beam Width: 36 degrees
- Level 3dB Beam Width: 72 degrees
Resources
Package Contents
- 1x Microwave Sensor
- 1x Digital Sensor Cable
Payment & Accreditations
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Accreditations
Overall product rating out of 5: 5.00
Based on 7 reviews
Write Review
Sort
Clear Filters
Order By
Newest First
Oldest First
Most Popular
Highest Rating
Breakdown
7
0
0
0
0
Product Reviews
Gravity: Digital Microwave Sensor (Motion Detection)
perfect!
Was this review helpful?
2 years ago
Gravity: Digital Microwave Sensor (Motion Detection)
Works well with Arduino Uno. I Need it to work with the ESP32, No Libraries for ESP32 :(
Delivery Great.
Bill.
Was this review helpful?
2 years ago
Gravity: Digital Microwave Sensor (Motion Detection)
Reviewer didn't leave any comments
Was this review helpful?
2 years ago
Gravity: Digital Microwave Sensor (Motion Detection)
I like this Microwave sensor. Although large compared with some units, this will work with ESP8266/ESP32/Tasmota/Home-Assistant straight out of the box. Although the data sheet specifies 5V operation, I found that the units gave false triggering and they should be used with 3.3 supply. I had used similar mwave units which had switchable supply but these units do not have that facility - not that it is a problem! Compared with PIR sensors, I think these are far superior in use.
1 person found this review helpful.
Was this review helpful?
3 years ago
Gravity: Digital Microwave Sensor (Motion Detection)
Great device. Exceptionally sensitive within range to very small body or object movements, and easy to interface
Was this review helpful?
4 years ago
Gravity: Digital Microwave Sensor (Motion Detection)
I should have read the description a little more carefully since I was interested in detecting range and speed, which is implied in the "summary of microwave" description, but this is simple a presence "on/off" detector. I've used a more advanced RADAR unit instead.
But as usual, superb speed of service and delivery from the PiHut.
Was this review helpful?
4 years ago
Gravity: Digital Microwave Sensor (Motion Detection)
I bought one of these to play with and I ended up 3D printing a mount to place it in an old parabolic dish I'd had for ages. As is, the unit is quite sensitive to movement off to the sides of it and as well behind it. With the dish, it now largely ignores any movement behind it and the range has been extended to at least 25 meters or so. It is VERY sensitive, surprisingly so! Standing in front of it at about 12 meters away any movement of a centimeter or so is enough to trigger it on it's highest setting. Very impressed! I'm using it to detect movement indoors and turn some WS2812B leds onto full brightness over a serial radio link. Toying with buying another of these. Excellent fun and certainly works very well. Attached some photos.
1 person found this review helpful.
Was this review helpful?
4 years ago
New content loaded
