Commercial Hands-Free Door Activation | Capacitive Proximity Technology | Adjustable 0–4" Detection Range | Illuminated LED Ring | IP65 Rated

The BEA 10MS21 Series Magic Switch is a commercial-grade, touchless automatic door activation sensor designed to provide convenient, hygienic, and accessible operation of automatic pedestrian doors.

Using advanced capacitive proximity sensing technology, the BEA MS21 detects a hand approaching the activation plate without requiring physical contact. This hands-free operation helps reduce contact with frequently touched surfaces in healthcare facilities, cleanrooms, commercial buildings, and other high-traffic environments.

Featuring a durable 304 stainless steel faceplate, illuminated LED mounting ring, and a low-profile beveled design, the MS21 combines commercial-grade durability with professional architectural styling.

The sensor's adjustable detection range of up to 4 inches allows installers to customize the activation zone for close-quarter environments, helping reduce unwanted door activation.

Available in 6-inch round and 4.75-inch square configurations, the MS21 also offers three faceplate designs: WAVE TO OPEN text only, accessibility symbol only, or text with accessibility symbol.

Additional features include selectable audible and visual activation alerts, 12–24VAC/VDC operation, a solid-state relay output, and an IP65-rated enclosure for appropriately installed applications.

The BEA 10MS21 Series is well-suited for maintaining existing automatic door systems and replacing compatible MS21 touchless activation devices.

Key Features & Benefits

Capacitive Touchless Activation Technology

• Uses capacitive proximity sensing rather than microwave motion detection.

• Activates the connected automatic door without physical contact.

• Detects a hand approaching the sensor within the configured sensing zone.

• Helps minimize contact with frequently used activation surfaces.

• Ideal for healthcare, laboratory, cleanroom, and commercial environments.

Adjustable Short-Range Detection

• Adjustable detection zone from approximately 0 to 4 inches.

• Designed for close-quarter automatic door applications.

• Helps limit accidental activation caused by nearby pedestrian movement.

• Allows sensitivity adjustment during installation.

• Actual detection range depends on hand position, target size, and environmental conditions.

Illuminated LED Mounting Ring

• Highly visible LED illumination surrounds the activation plate.

• Makes the sensor easier to identify.

• Provides visual feedback for touchless operation.

• Configurable visual alert behavior.

• Attractive, modern appearance for commercial entrances.

Selectable Audible & Visual Alerts

• Integrated audible activation notification.

• Audible indication can be enabled or disabled.

• Configurable visual indication.

• Provides feedback when the device detects an activation request.

• Useful for commercial facilities requiring recognizable operation.

Durable Stainless Steel Construction

• Heavy-duty stainless steel faceplate.

• Clear polycarbonate mounting ring and enclosure.

• Designed for demanding commercial environments.

• Resistant to ordinary wear from frequent use and routine cleaning.

• Low-profile beveled design helps reduce accidental impact damage.

IP65 Weather-Resistant Protection

• IP65-rated enclosure when installed according to manufacturer requirements.

• Protects against dust ingress and water jets.

• Suitable for properly sealed commercial and industrial installations.

• Useful for healthcare and washdown environments where appropriate.

• Verify sealing and electrical installation requirements for exposed locations.

Multiple Faceplate Configurations

• 6" round stainless steel faceplate.

• 4.75" square stainless steel faceplate.

• WAVE TO OPEN text only.

• Accessibility symbol only.

• WAVE TO OPEN text and accessibility symbol.

Available Models & Variants

6" Round Magic Switch

4.75" Square Magic Switch

Ordering Note: Select the appropriate faceplate size and artwork configuration before ordering. These model numbers identify the original hardwired MS21 Series devices.

Technical Specifications

Product Dimensions

The low-profile design minimizes projection from the wall while providing a clearly visible touchless activation area.

How the BEA 10MS21 Works

Step 1 – Hand Approaches the Sensor

A pedestrian moves a hand toward the stainless steel Magic Switch faceplate.

Step 2 – Capacitive Proximity Detection

The internal sensing circuit detects the approaching hand within the configured sensing zone, without requiring physical contact.

Step 3 – Activation Indication

The illuminated LED mounting ring and optional audible alert provide feedback according to the installer-selected settings.

Step 4 – Electrical Output Activation

The sensor activates its solid-state relay output, sending an activation signal to the compatible automatic door controller.

Step 5 – Automatic Door Operation

The connected automatic door operator responds according to its programmed opening and closing sequence.

The MS21 provides the activation request; the automatic door controller and associated safety equipment manage the door's operation.

Compatible Equipment & Accessories

Optional Wireless Conversion

The original MS21 is a hardwired activation sensor. BEA previously offered a compatible 900 MHz retrofit transmitter for wireless applications.

Wireless conversion equipment, if available, is sold separately and requires a compatible receiver.

Recommended Applications

The BEA 10MS21 Series is suitable for:

• Hospitals and healthcare facilities

• Medical offices and outpatient clinics

• Pharmaceutical manufacturing facilities

• Laboratories and cleanroom environments

• Assisted living and senior care facilities

• Schools, colleges, and universities

• Government and municipal buildings

• Commercial office buildings

• Hotels and hospitality facilities

• Food processing facilities

• Industrial and manufacturing environments

• Automatic swinging doors

• Automatic sliding doors

• Accessible commercial entrances

• Existing automatic door system repairs

Installation & Compatibility Information

The BEA 10MS21 Series is designed for installation with compatible automatic pedestrian door operators.

Installation Requirements:

1. Select the correct round or square faceplate configuration.

2. Install a compatible electrical mounting box according to BEA instructions.

3. Secure the sensor mounting assembly to the mounting surface.

4. Connect the 12–24VAC/VDC power supply.

5. Connect the solid-state relay output to the compatible automatic door controller.

6. Adjust the sensing zone to the desired activation distance.

7. Configure audible and visual indications as needed.

8. Test touchless activation and verify all door safety functions.

Important Installation Notes:

• Requires a compatible low-voltage power source.

• Automatic door operator is not included.

• Electrical mounting boxes and optional wireless accessories are sold separately.

• Do not exceed the specified relay voltage and current ratings.

• Weather-resistant performance depends on proper installation and sealing.

• Installation must follow applicable building, electrical, accessibility, and automatic door safety requirements.

MS21 vs. MS41 – Replacement Information

BEA has discontinued the original MS21 Series and recommends the newer MS41 Series as an alternative.

The original MS21 uses capacitive proximity sensing with a maximum sensing range of approximately 4 inches.

The newer MS41 provides updated microwave-based touchless activation technology with additional available configurations.

When replacing an MS21, verify mounting dimensions, electrical connections, detection settings, and operator compatibility before selecting an MS41 replacement.

The MS41 should not be assumed to be a direct plug-and-play replacement without checking the installation requirements.

Why Choose the BEA 10MS21 Magic Switch?

The BEA 10MS21 Magic Switch provides dependable touchless activation for existing commercial automatic door installations.

Its capacitive proximity technology is particularly useful in close-quarter environments, where a short detection zone can help minimize unintended activation.

The durable stainless steel faceplate, illuminated mounting ring, IP65-rated enclosure, and adjustable detection settings make it well-suited for healthcare, institutional, and commercial applications.

For facilities maintaining an existing BEA MS21 installation, obtaining the correct original replacement model can help preserve the established mounting and activation configuration.

Maintain your commercial automatic door system with the BEA 10MS21 Magic Switch – providing hands-free door activation, short-range proximity sensing, and durable stainless steel construction.

Availability Notice: This product series has been discontinued by BEA. Remaining inventory may be limited. Contact Commercial Door Worx to verify availability or discuss the newer BEA MS41 Series alternative.