Formula Systems Elevator Light Curtains & Door Safety Edges

Upgrade your door safety with the industry-standard Formula Systems Elevator Light Curtains. We recommend this product line for its proven reliability, 3D detection capabilities, and code compliance. KONE Spares keeps Formula Systems edge detectors in stock at aggressive price points, ensuring cost is never a barrier to installing the best safety technology available.

Formula Vision Plus™: The Ultimate 3D Elevator Light Curtain

The Formula Vision Plus™ is a cutting-edge elevator door safety sensor that combines standard 2D infrared beams with advanced 3D projection technology. Designed as a direct upgrade for outdated mechanical edges, this intelligent light curtain offers the most reliable passenger protection available on the market today.

Why Upgrade to 3D Detection? Unlike standard sensors, every diode in the Vision Plus edge independently transmits and receives signals. This creates a dense, multi-beam safety web that significantly decreases the risk of “no-detect” errors. It accurately identifies passengers approaching from wide angles—ensuring the doors reopen before impact—and provides superior reliability in high-traffic landings with multiple people.

Eliminate False Triggers This system is specifically engineered to reduce nuisance door reversals. The precise 3D protection zone detects actual obstructions while ignoring cross-traffic or nearby movement, solving the common problem of ghost tripping and keeping your elevators moving efficiently.

Formula Plus Features

ASME A17.1-2022 / CSA B44-22 code certified
Patent Pending
2D & 3D technology in each edge – no additional detection units
Built-in self-monitoring technology
Universal mounting for center or side door openings
ECO mode to reduce unnecessary power usage by up to 30%
Connected directly or via Universal Interface Power Supply

Formula Plus Benefits

Protection zone eliminates nuisance door reversal
Quicker installation time
Combined 2D & 3D technology in each edge reduces false 3D triggers
Intuitive technology significantly improves detection ability
Reduces risk of accidents, caused by no/mis-detections

Formula Plus Standard Characteristics

Response Time: <100ms
Output: NPN
Ingress Protection: IP54
Operating Voltage: 24V DC (18-30)
Current Consumption: 90 mA Max RMS (60mA ECO mode)

Light Immunity: >100,000 lux
Indicators (LED): Red obstruction
Temperature: Ambient -20°C to + 70°C, Storage -40°C to +80°C
Material: Al. Alloy casing, plastic lens cover
Approvals & Certification: cULus, Liftinstituut, CE, UKCA

Complete 3D Light Curtain Retrofit Kit

The Formula Vision Plus comes as a comprehensive elevator door safety package designed for universal compatibility. Each kit includes the 2D/3D Receiver (RX), Transmitter (TX), a Universal Interface Power Supply, and flexible mounting hardware.

Fast & Cost-Effective Installation By integrating the 3D detection technology directly into the edges—eliminating the need for separate control boxes or external sensors—the Vision Plus system simplifies the wiring process. This “all-in-one” design significantly reduces installation time and lowers total labor costs for modernization projects.+1

Select the Right Model for Your Elevator

Formula Vision Plus FZU-1342 (Narrow): A compact profile specifically engineered for narrow door openings, side-slide doors, or freight elevators with limited clearance..

Formula Vision Plus FZU-1442 (Standard): The go-to solution for standard passenger elevator door widths and center-opening configurations.

Formula Plus Specifications

Model Version	Dimensions (mm)					Range (m)			Mounting
	W	D	H	Min	Max	Door	Track	Qty	Top
Vision Plus FZU-1442	30	20	2136	0	1.8	*		42	1500
Vision Plus FZU-1342	40	10	1803	0	1.8	*		42	1535

Formula Safescreen™: The Universal Infrared Light Curtain

The base model Formula Safescreen product is a quick, easy fit and is guaranteed to The Formula Safescreen™ is the industry standard for reliable, maintenance-free elevator door protection. Engineered specifically for the North American market, this infrared light curtain is a “fit-and-forget” solution that requires zero field adjustments—saving your technicians valuable time on site.

Key Features & Benefits:

Universal Compatibility: Works seamlessly with any elevator door operator (Otis, Schindler, Dover, ThyssenKrupp) and is backward-compatible with existing Formula Systems power supplies.
Extreme Durability: Fully watertight (IP65 rated) and sunlight immune, making it perfect for glass elevators, parking garages, and outdoor lifts where standard sensors fail.
Industry-Leading Warranty: Backed by a massive 10-Year Warranty, guaranteeing long-term reliability.
High-Density Detection: Features 47 diagonal infrared (IR) beams housed in a slim 30mm x 20mm aluminum profile, creating a dense safety net that exceeds code requirements.

Easy Installation for Modernization Whether you are replacing a mechanical safety edge or upgrading an older sensor, the Safescreen is designed for direct wiring into modern door controllers. For legacy equipment, it connects easily via the Formula Systems Universal Interface, making it the most versatile retrofit door sensor available.

Formula Safescreen Specifications

Model	Version	Dimensions (mm)					Range (m)			Mounting
		W	D	H	Min	Max	Door	Track	Qty	Top	Qty Rx	Qty Tx
0524	Freight	30	20	2136	0	4.0		*	24	1788	24	24
0515	Standard	30	20	813	0	1.8	*		15	460	6	6
0547	Standard	30	20	2136	0	1.8	*		47	1788	24	24
0547	Long Range	30	20	2136	0	5.0	*		47	1788	24	24

Formula Safescreens Standard Characteristics

Response time: <100ms
Output: NPN
Ingress Protection: IP54
Operating Voltage: 24v (18-30)
Current Consumption: 100mA (Typical)

Light Immunity: >100,000 lux
Indicators (LED): Red obstruction
Temperature: Ambient -20ºC to +70º, Storage -40ºC to +80ºC
Material: Al. Alloy casting, plastic lens cover
Approvals & Certifications: UL, cUL, CE

_{Formula Systems Safescreen, and Formula Vision Plus are all trademarks of Formula Systems and are used with permission.}