If you want to use a small room such as kitchen ,toilet,bedroom etc, you only need to purchase 5.8G type ;

If you want to use it in a large conference room, garage, or lobby, you can choose to purchase 24G type;

Functional ZigBee Smart Human Presence Sensor
Featured as human presence,human static,human micro motion and human movement motion detection to detect the presence or absence of people in the area,even to detect the static state such as personnel sleeping accurately with mmWave Radar Detection featured.

Works with Zigbee 3.0 Hub

ZigBee Hub as Control Center,Tuya ZigBee gateway is required for this ZigBee human presence sensor,performing as the center bridge for all Tuya ZigBee smart devices with extremely stable signal and a really good necessity for whole-house intelligence.(note:Tuya ZigBee hub is highly recommended for its wider compatibility than other hubs)

Advanced New Design with Multiple Settings
8 types of Common Parameter Settings for sensors support setting, and 5 types of Control Parameter Settings support setting.

Supports two installation methods.
You can install it on the ceiling or wall using double-sided adhesive or expansion screws. The device supports connecting to 85-265V AC power.

More accurate radar measurement.
5.8G and 24G versions optional, and according to different accuracy requirements, you can choose the version that is more suitable for you.

Perceived Light Intensity for Smart&Scene Linkage
(1).Illuminance monitor in Tuya Smart APP enables its smart feature as smart scene linkage with other smart devices ,especially your house lights to ON/OFF automatically as the brightness changes;Besides,you can intelligently linkage the sensor to other smart home devices for home automation.
(2).In this device, the Illumin threshold (0-420.00 Lux) can be set.When the device is in local
(automatic) mode operation, it can be
automatically controlled in conjunction with the illumin threshold. When the actual luminance value is lower than the set illumin threshold, the local mode of the relay(breaker mode) is executed normally. When the actual luminance value exceeds the set illumin threshold, the relay remains closed regardless of whether someone is present.

Relay function(Breaker)
If you want someone to automatically turn on the light, you can try directly connecting the lamp to the sensor, which can save an intelligent switch. If you only want to use it as a sensor, you can ignore it.Three relay modes can be set in the APP.
Standard (cloud linkage): It can be remotely
controlled to turn on/off the relay through the APP.
Local (automatic): If someone is present, the relay
will automatically turn on, otherwise it will turn off.
not support: Disable relay.

Specifications

Network: ZigBee 3.0
input: 85-265VAC.
Working temperature: -10℃~+50℃
Sensitivity: 1-9(default 7)
5.8G Beam Angle:120X120
24G Beam Angle:110X110°
5.8G Sensing distance: 0-11m(default 6m)
24G Sensing distance: 2.5-10m(default 7m)
5.8G Sensing radius: 2.5-3m(Presence),4～5.5m(motion).
24G Sensing radius: 2-3m(Presence),4～4.5m(motion).
Illuminance Sensor: 0～500 Lux（The approximate brightness of the environment in which the sensor is located）.
Departure Delay: 0.5s～25 min；It is recommended to set it to no less than 15S. Otherwise, detection may be missed.
Transmitting Power: 3～5 dBm(5.8G),10dBm(24G).
Working Humidity: 5～90% RH(No Condensation).
Protection Level: IP20.
Relay Load: Resistive load≤3000W LED≤300W.

Restricted Usage Scenarios
5.8G: In elevators, metal sealed toilets, and similar all metal sealed spaces; Scenarios where the plane area of metal decorative materials outside the non ceiling area exceeds 20%.
24G: The restrictions are not significant.

What are the main differences between 24G and 5.8G radars?
24G radar has higher sensitivity and more accurate departure delay time.

For example, the departure delay is set to 30 seconds. The 24G version will become unmanned after a 30 second delay, with a maximum increase of 1-3 seconds, while the 5.8G version will increase by about 5-8 seconds. The theoretical recognition accuracy of the 24G version is higher. The 5.8G radar is actually fully compatible with daily use.

The specific version to use depends on your usage scenario. You can refer to their detailed parameter differences.

Of course, you can leave a message with our customer service to determine which version is more suitable for you.