Description

Major Tech MS371 360° True Presence Microwave Sensor, Flush Ceiling Mount

The MS371 is a true presence microwave (occupancy) sensor that detects even micro-movements like typing or breathing. It offers 360° detection, adjustable controls, and can detect through doors, glass, and thin walls—making it easy to integrate into new or existing indoor flush-mount installations.

Stop wasting energy on empty rooms

Manually switching lights or relying on basic motion sensors can leave lights on unnecessarily or switch them off while someone is still present. The MS371’s true presence technology keeps lights on when subtle movement is detected and turns them off when the space is vacant—helping reduce energy use without compromising comfort.

Key Features

• True presence microwave sensing detects micro-movements such as typing or breathing
• 360° detection area for comprehensive room coverage
• Detects through non-metallic obstacles like doors, glass, and thin walls
• Adjustable ambient light threshold: <3 to 2000 Lux
• Adjustable time delay: 10 seconds to 12 minutes; timer extends on continued detection
• Supply voltage: 220–240 V AC, 50/60 Hz
• Rated load: 2000 W (incandescent), 1000 W (LED/CFL)
• HF system: 24 GHz CW radar (ISM band)
• Presence detection distance: up to 6 m
• Flush ceiling mount; installation height: 2–4 m
• Hole cut size: Ø63–66 mm
• Power consumption: <10 mW
• Operating conditions: -20°C to 40°C; <93% RH
• Standards: IEC 60669-1 / IEC 60669-2-1; AS/NZS 60669.1 / AS/NZS 60669.2.1
• Warm-up period on power-up: approximately 30 seconds
• Indoor flush-mount installation by a qualified electrician is required

Documentation

• Instruction Manual
• Technical Datasheet