Doppler Microwave Occupancy Sensor, 24GHz, 10A/30A

The SUCH doppler microwave occupancy sensor is a 24GHz radar-based lighting control switch designed to detect both motion and stationary human presence within a 130° detection angle. Unlike conventional PIR sensors, it uses active microwave detection to sense subtle movements such as chest expansion during breathing, eliminating false shutoffs when a person remains still in the coverage area. Configurable via a 6-position DIP switch, it supports adjustable sensing range (25%–100%), delay time (5 seconds to 5 minutes), light-control threshold, and indicator behavior. It is suited for switching incandescent, CFL, LED, and LED strip loads in residential, commercial, and industrial lighting circuits, including fire-alarm-linked emergency lighting applications.

Feature

• 24GHz Doppler Radar Detection: Detects subtle movements, such as breathing-related chest motion, without requiring direct line-of-sight. Microwave power output is under 1mW, suitable for low-power indoor sensing.
• 130° Directional Planar Antenna: Wide-area coverage from a single embedded installation point, up to 3m mounting height.
• 4-Step Adjustable Sensing Range (25%/50%/75%/100%): Detection diameter adjustable from approximately 1.2m to 5m to match different room sizes.
• 4-Step Adjustable Delay Time (5s/30s/1min/5min): Load stays on for a preset interval after last-detected motion, balancing energy use and comfort.
• Dual-Mode Light Control: Switch between dusk-to-dawn sensing (factory default ~5 LUX ±20%) and 24-hour operation.
• 10A/30A Relay Load Options: 10A supports up to 1000W incandescent / 400W CFL / 200W LED / 5m LED strip; 30A supports up to 5000W incandescent / 1500W CFL / 800W LED / 15m LED strip.
• Fire Linkage Override: Accepts auxiliary fire alarm signal input for forced-on operation.
• DIP Switch Configuration: All key parameters set via physical switches, no programming required.

Dimension (Unit:mm)

Wiring

Fig 1. Basic Wiring (Automatic Mode)

Note: Fully automatic operation — lights turn on when presence is detected and off after the delay. Ideal for corridors and stairwells.

Fig 2. Wall Switch Wiring (Manual + Automatic Mode)

Note: Adds a wall switch for manual override — turn it off to disable the sensor, or on to resume automatic detection. Great for bedrooms and office entrances.

Fig 3. Fire Alarm Override Wiring

Note: Connects to a fire alarm circuit to force the light on during emergencies, overriding normal sensing. Designed for fire-code compliant areas like stairwells and exits.

DIP Switch Settings

• Detection Distance Setting: Switches 1 and 2 are used to adjust the detection distance. Four distance levels are available: 100%, 75%, 50%, and 25%.
• Hold Time Setting: Switches 3 and 4 adjust the hold time after detection. Available settings include 5s, 30s, 1min, and 5min.
• Indicator Light Setting: Switch 5 controls the indicator light function. Select ON to enable the indicator light or OFF to disable it.
• Daylight Threshold Setting: Switch 6 adjusts the daylight detection mode. Select Dusk-to-Dawn mode for low-light activation or Daylight mode for operation under all lighting conditions.

Installation

Steps:

1. Secure the mounting base to the ceiling with screws.
2. Wire the switch and light fixture according to the wiring diagram — for safety, installation should be performed by a qualified electrician.
3. Align the switch upward with the base slot, then rotate left to lock it in place.

Detection

Note: Detection range may vary depending on target size, material, and reflectivity (RCS). The sensor can detect motion through common non-metal materials such as glass or thin plastic panels, but not through thick walls or metal doors.