This radar has multiple functions in one device which are customisable with your own definitions.

It can detect human presence and absence, the motion and the direction of motion, object speed, and detected distance. It provides the open custom function by offering adjustable underlying parameters for you to adjust detected range, sensing sensitivity, trigger threshold, valid time for states changing, and installation environment.

There is also an underlying open function provided and the parameters from it are the static noise of the environment, the detection range of presence, motion noise of the environment, the detection range of the object moving, and the detection speed of an object moving. You can utilise its performance to build your own object movement detection radars, to meet the different needs in various scenarios.

Features

Based on the FMCW principle: highly sensitive and immune to environmental interferences
Visual debugging and configuration tools: straightforward and simple to use while keeping the data clearly presented
More parameter modulation options: multiple configurable underlying parameter settings to meet the different needs in various scenarios
Compatible with Arduino Library: adopts UART and provides Arduino library support
Home Assistant Ready: wiki to walk you through how to integrate it with Home Assistant
Product number: Seeed101991030

Specifications

Basic Information

Contents	Minimum	Typical	Maximum	Unit
Operating voltage (VCC)	4.5	5	6	V
Operating current (ICC)	95	110	120	mA
Operating I\O Input/output current(IIO)	–	8	20	mA
Operating temperature	-20	–	85
Storage temperature	-40	–	85
Buad Rate	115200
Size	35mmx30mmx9mm

Detect Angle and Range

Contents	Minimum	Typical(default)	Maximum	Unit	Installation
Motion detection range	–	5	5	meter	slide mount
Stationary/micro movements detection range	–	4	4	meter	slide mount
Detection range in the case of sleep	–	3	3.5	meter	slide mount
Radar detection angle (horizontal)	–	90		degree
Radar detection angle (pitch)	–	60		degree

RF Performance

Contents	Minimum	Typical	Maximum	Unit
Operating frequency	24	–	24.25	GHz
Transmitted power	–	6	8	dBm
Antenna gain		10		dBi
Horizontal beam (3dB)		100		degree
Vertical beam (3dB)		80		degree