Doodle Smart WiFi Zigbee Human Body Exists Sensor – 24G Millimetre Wave for Accurate Presence Detection

Standard infrared PIR sensors only detect movement, so they often fail when you’re sitting still – turning off lights or triggering false alarms. The Doodle Human Body Exists Sensor solves this using 24G millimetre wave radar technology, which detects human presence even when motionless. This makes it a reliable choice for smart home automation where continuous occupancy sensing is needed. It works with the Graffiti ecosystem via the Doodle or Smart Life app, allowing seamless linkage with lights, switches, sockets, curtains, and other compatible devices. With a compact 10x10x4cm black design, it fits discreetly in any room.

Features and Construction

This sensor is built around advanced radar detection and flexible connectivity, ensuring accurate performance in smart home setups.

24G Millimetre Wave Radar

Unlike conventional PIR sensors that rely on infrared heat changes, this unit uses 24G millimetre wave radar to detect human presence in real time. It can identify stationary occupants, such as someone reading or sleeping, eliminating false-off events that interrupt automation. The radar is omnidirectional, detecting people up to 1.5 metres behind the device, so proper placement is key for accuracy.

WiFi and Zigbee Connectivity

The sensor connects via either WiFi or Zigbee protocol, giving flexibility to match your existing smart home network. It supports the Graffiti ecosystem, working with the Doodle APP and Smart Life APP for automation and control. You can set routines that trigger lights, switches, sockets, or curtains based on occupancy, creating a responsive home environment.

Compact Black Design

Measuring just 10x10x4cm and finished in black, the sensor is unobtrusive and blends into most room decors. It is powered via a USB cable (5V2A) for continuous real-time supply, so there’s no battery worry. The device is designed for wall mounting with the back against a surface to avoid false detection from behind.

Uses and Placement

The human presence sensor is suited for both residential and commercial smart automation, where accurate detection improves energy efficiency and convenience.

Smart Home Automation

Link the sensor with lights to keep them on while you’re in the room, even if you’re not moving. Connect it to switches or sockets to activate appliances only when someone is present, reducing standby power. The Graffiti ecosystem integration allows custom scenes, such as dimming lights when the room is empty or turning on ventilation when occupancy is detected.

Office and Workspace Use

In offices or workspaces, the sensor can control lighting and heating based on real-time occupancy, saving energy without manual intervention. Its ability to detect stationary people is particularly useful in meeting rooms or library zones, where occupants may remain still for long periods.

Safety and False Alarm Prevention

To maintain accurate detection, avoid pointing the device at household appliances like air conditioners, refrigerators, computers, or fans, as these can cause false positives. A quality 5V2A power source is recommended – insufficient voltage may also lead to errors. Proper placement against a wall ensures the omnidirectional radar works as intended.

Benefits and Buying Value

Choosing the Doodle sensor brings practical advantages for smart home users seeking reliable occupancy detection without unnecessary triggers.

Reuse and Low Maintenance

The USB-powered design means no battery replacements, reducing ongoing maintenance. Once installed with a stable 5V2A supply, the sensor operates continuously with little user intervention. Its solid-state construction has no moving parts, supporting long-term use in fixed installations.

Why Choose This Product

If you need a human presence sensor that works beyond PIR limitations, the 24G millimetre wave technology is a clear advantage. It integrates directly with the Graffiti ecosystem, offering easy setup via widely used smart home apps. The compact size and black finish make it suitable for various environments without drawing attention, while the dual WiFi/Zigbee connectivity provides flexibility for different network setups.