Microwave Motion Sensor MACLEAN MCE137 — recessed design, model 41933

MACLEAN MCE137 — recessed microwave motion sensor, model 41933, is designed for discreet indoor presence detection and automatic control of lighting or security systems. The sensor uses microwave technology to detect movement through a ceiling or fixture opening, enabling flush installation where minimal visual impact is required. It is suitable for installations in homes, offices, corridors and utility spaces where automatic switching based on presence enhances convenience and energy efficiency.

Advantages

The recessed design provides a low-profile fit that integrates with ceilings and fixtures, reducing visible hardware. Microwave detection offers reliable sensing capability across a configurable range and through non-metallic obstructions, enabling sensitivity to small movements. The sensor supports a broad ambient light detection range to avoid unnecessary switching when natural light is sufficient, and it handles typical indoor lighting loads up to the specified maximum.

Suitable for

• Automated ceiling lighting in residential rooms and apartments
• Corridors, stairwells and common areas in office buildings
• Closets, storage rooms and utility spaces requiring presence-based control
• Integration with indoor security or access-control systems for presence detection

Key specifications

• Detection technology: microwave motion sensing for presence detection
• Adjustable detection range: approximately 4–10 m
• Light sensitivity (ambient): adjustable operation between 3 and 2000 lux
• Maximum switched load: up to 1200 W suitable for typical indoor lighting circuits
• Mounting type: recessed installation into ceilings or fixtures for flush appearance
• Intended environment: indoor use

How to use

Install the sensor into a prepared ceiling or fixture opening following electrical safety standards and local regulations. Connect the sensor to the lighting circuit and set detection range and ambient light sensitivity according to the coverage and daylight conditions of the room. Test operation by moving within the coverage area to verify reliable detection and correct switching of the connected load. Adjust settings if required to avoid false triggers or missed detections.

Usage recommendations

Position the sensor centrally relative to the area to be monitored and avoid mounting near large metallic objects or strong RF sources that could affect microwave performance. For energy-efficient operation, set the ambient light threshold so lights remain off when sufficient daylight is present, and select a detection range appropriate to the room size to prevent over-sensitivity in adjacent spaces.