Air curtain sensors switch an air curtain on and off automatically, so the unit runs when it is needed instead of running continuously. If you are looking for an automatic air curtain door sensor, or a sensor for an air curtain for doors and open entrances, 1 LEAP Technologies supplies magnetic door sensors that respond to a door opening or closing, a PIR motion sensor that responds to people approaching, and a flame proof sensor for hazardous areas.
compare the range, choose the sensor type that suits your entrance, and go straight to the right product page. If you are not sure which model fits to you, our team can help you choose.
1 LEAP 1L-AC-101SB Air Curtain
1 LEAP Air Curtain Double Door Sensor Manufacturer 1L-AC-101SD
1 LEAP Air Curtain Single Door Sensor 1L-AC-101S
1 LEAP Air Curtain White Double Door Sensor Manufacturer 1L-AC-101SBD
1LEAP Air Curtain Motion Sensor 1L-PS11
1 LEAP Technologies is an ISO 9001:2015 certified company (Certificate No. E20250728321), described on its certificate as a manufacturer and dealer of electronic components including magnetic reed switches, air curtain sensors, occupancy sensors, motion sensors and sirens.
Browse Air Curtain Sensors
1L-AC-101S Air Curtain Door Sensor
A magnetic door contact that detects when a door opens or closes and switches the air curtain on or off automatically, helping to save energy. It is used in retail stores, restaurants, offices, hospitals, cold storage and hotels, among other commercial settings. View the 1L-AC-101S Air Curtain Door Sensor
1L-AC-101SB Air Curtain Door Sensor (Black)
The same accurate door detection in a black finish, which suits dark door frames and modern interiors. It is a natural choice for premium retail spaces, hotels, corporate lobbies and glass entrances, and it is also listed for clean rooms, laboratories and food-processing areas. View the 1L-AC-101SB Air Curtain Door Sensor (Black)
1L-AC-101SD and 1L-AC-101SBD Air Curtain Sensors
[The 1L-AC-101SD is a double door air curtain sensor In white color and the 1L-AC-101SBD is a black double door air curtain sensor. Working principle of both models are same difference lies in color only.
1L-PS11 Air Curtain Motion Sensor
A PIR motion sensor that activates the air curtain when people approach, giving touch-free operation and energy savings. It is intended for open shopfronts, malls, airports, railway and metro entrances, hospitals, banks and similar high-traffic entrances. View the 1L-PS11 Air Curtain Motion Sensor
Flame Proof Air Curtain Sensor
A sensor with an explosion-proof enclosure, designed for safe operation in areas where flammable gases, vapors or dust may be present, such as oil and gas facilities, chemical plants and paint booths. View the Flame Proof Air Curtain Sensor
What Is an Air Curtain Sensor and How Does It Work?
An air curtain is a unit that blows a stream of air over an entrance. An air curtain sensor is the trigger that tells the unit when to start and stop. Without a sensor, an air curtain is usually left running whether or not anyone is entering. With a sensor, it can operate only when there is a reason to.
There are two common ways to decide when that moment is. The first is to watch the door. A magnetic door contact detects whether the door is open or closed, so the air curtain starts when the door opens and stops when it closes. The 1L-AC-101S and 1L-AC-101SB work this way. In function, a magnetic door sensor is similar to a door limit switch: it tells the system whether the door is open or closed, and that signal is used to start or stop the air curtain.
The second is to watch for people. A PIR (passive infrared) motion sensor detects movement in front of it, so the air curtain starts when someone approaches the entrance. The 1L-PS11 works this way, which makes it suitable where there is no door to monitor.
A third consideration is the environment rather than the trigger. In areas with flammable gases, vapors or dust, a standard electronic sensor is not appropriate, and an explosion-proof enclosure is needed. The Flame Proof Air Curtain Sensor is the product in this range designed for that purpose.
How the sensor signal connects to your air curtain depends on the air curtain’s control arrangement. If you share your air curtain make and model with us, we can confirm the right sensor before you order.
Door Sensor, Motion Sensor or Flame Proof Sensor: Which Do You Need?
The right choice depends mainly on two questions: does the entrance have a door, and is the area hazardous? The table below summarises the range.
Sensor type | What triggers the air curtain | Best suited to | Models |
|---|---|---|---|
Magnetic door sensor | The door opening or closing | Entrances with a door that opens and closes | 1L-AC-101S, 1L-AC-101SB |
PIR motion sensor | People approaching the entrance | Open or high-footfall entrances with no door to monitor | 1L-PS11 |
Flame proof sensor | Explosion-proof enclosure for hazardous areas | Areas with flammable gases, vapors or dust | Flame Proof Air Curtain Sensor |
Choose a door sensor if the air curtain should follow the door
A magnetic door sensor suits entrances where the position of the door should be decided whether the air curtain runs. This is typical for shops, restaurants, offices, clinics, pharmacies, hotels and cold storage rooms. Between the two door sensor models, the difference listed is finish: the 1L-AC-101S is the standard version, and the 1L-AC-101SB is black, which goes for dark frames, glass entrances and premium interiors.
Choose a motion sensor for open or high-footfall entrances
The 1L-PS11 suits entrances that stay open or have no door to monitor, such as open shopfronts, arcades, mall entrances, station and metro entrances, and service counters. Because it responds to people approaching, operation is touch-free. The detection range and mounting position matter for this type of sensor, so confirm them for your entrance. [detection range of this sensor is 180°.
Choose the flame proof sensor for hazardous areas
Where flammable gases, vapors or dust are present, choose the Flame Proof Air Curtain Sensor. Do not assume that the standard door or motion sensors are suitable for these areas. Flameproof Zone Entry Points, Chemical Plant Doorways, Oil & Gas Facility Entrances, Industrial Roll-Up Doors in Hazardous Areas, Explosive Atmosphere Warehouses, Petrochemical Processing Units, Fuel & Gas Storage Facilities.
Not sure which fits? Send us your entrance type and environment, and we will help you select a model.
Why Add a Sensor to an Air Curtain?
An air curtain that runs all day uses power even when the door is closed or nobody is entering. A sensor starts the unit only when the door opens or when a person approaches, which helps in reducing unnecessary running time and gives you an automatic, hands-free operation.
Automatic control also removes the need for staff to switch the unit on and off, which is useful in busy shops, restaurants and public buildings. This applies to an air curtain for doors in shops and offices as much as to wide industrial gates. The actual energy saving depends on your entrance, how often it is used, and the air curtain itself, so we do not quote a fixed percentage.
Air Curtain Sensor Applications
The applications below are grouped by sensor type.
Door sensors (1L-AC-101S): retail stores and showrooms, restaurants, cafés and bakeries, offices and corporate buildings, hospitals, clinics and pharmacies, cold storage and warehouses, and hotels and banquet halls.
Black door sensors (1L-AC-101SB): premium retail stores and showrooms, hotels, restaurants and lounges, corporate lobbies and glass entrances, supermarkets and convenience stores, clean rooms, laboratories and pharmaceutical units, and commercial kitchens and food-processing units.
Motion sensor (1L-PS11): open shopfronts and arcades, shopping malls and supermarkets, airports, railway stations and metro entrances, hospitals and healthcare facilities, banks, ATMs and service counters, factories and industrial gates, cinema halls, and hotels and event venues.
Flame proof sensor: oil and gas facilities, chemical and pharmaceutical plants, paint booths and coating units, grain, flour and sugar mills, mining and tunneling, battery manufacturing and charging rooms, fireworks and explosives storage, and hazardous cold storage and processing areas.
If your application is not listed, contact us with details of the entrance and environment, and we will advise whether a model in this range is suitable.
Bulk Orders, OEM Supply and Technical Support
Air curtain sensors are bought by a range of customers: air curtain manufacturers and OEMs, installers, distributors, automation professionals and end users such as shops, hospitals and factories. Each has different needs, so we handle enquiries according to the quantity and application involved.
For bulk orders and distributor enquiries, tell us the models and quantities you need. If you are among the air curtain manufacturers in India, or a manufacturer elsewhere, looking for a sensor supplier for your units, we welcome OEM enquiries. We provide all over India as well as International. For OEM requirements, tell us how the sensor will be used in your product or system, and we will discuss what can be supplied.
If you are replacing a sensor or upgrading an existing air curtain, send us the details of the installation. This helps us in confirming whether a door sensor or a motion sensor is the better trigger for your entrance, and whether a standard or flame proof model is needed.
Air curtain door sensor price
The price of an air curtain door sensor depends on the model, finish and order quantity. Prices are not listed on this page, so please send us the model and quantity you need and we will send a quote. Regarding the price range.
Before You Order
Sharing the following details helps us confirm the right model and avoids ordering the wrong sensor type:
- Entrance type: a door that opens and closes, or an open entrance.
- Environment: a standard commercial space, a clean or food area, or a hazardous area.
- Air curtain details: the make and model, and how its control is wired.
- Finish: standard or black, if the sensor will be visible.
- Quantity and supply type: a single unit, a bulk order, or OEM supply.
Technical specifications, including electrical ratings, contact configuration (NO or NC), sensing range or gap, dimensions, mounting method, cable details and ingress protection, are given on the individual product pages or contact with us.
Frequently Asked Questions (FAQs)
What is an automatic air curtain door sensor?
It is a sensor that switches an air curtain on or off automatically when a door opens or closes, so the air curtain runs only when needed. The 1L-AC-101S and 1L-AC-101SB are magnetic door sensors of this type.
What does an air curtain sensor do?
It detects a door opening or a person approaching and switches the air curtain on or off automatically, so the unit runs only when it is needed.
What is the difference between a door sensor and a motion sensor?
A door sensor (1L-AC-101S or 1L-AC-101SB) uses a magnetic contact to detect whether a door is open or closed. The motion sensor (1L-PS11) uses PIR detection to sense people approaching, which suits open entrances.
Which sensor should I use for an entrance without a door?
The 1L-PS11 motion sensor is intended for open shopfronts, arcades and similar entrances. Please confirm the detection range for your site. As this product detection range is 180.]
What is the difference between the 1L-AC-101S and the 1L-AC-101SB?
Both are air curtain door sensors that detect door opening and closing. The 1L-AC-101SB has a black finish that suits dark frames and modern interiors.
Can these sensors be used in hazardous areas?
Only the Flame Proof Air Curtain Sensor is designed for areas with flammable gases, vapors or dust. The standard sensors should not be assumed to be suitable for such areas.
Will the sensor work with my air curtain?
Compatibility depends on how your air curtain is controlled and wired. Send us the air curtain make and model, and we will confirm the suitable sensor.
What is the air curtain door sensor price?
Prices are not listed on this page. The air curtain door sensor price depends on the model, finish and quantity, so contact us with these details and we will send a quote.
Do you supply bulk or OEM orders, including to air curtain manufacturers in India?
Yes, we welcome bulk and OEM enquiries, including from air curtain manufacturers who need a sensor supplier.
Is 1 LEAP Technologies certified?
Yes. 1 LEAP Technologies is an ISO 9001:2015 certified company.
Talk to Our Team
Need help choosing a sensor, or want a price, a bulk quote or an OEM supply arrangement? [Contact 1 LEAP Technologies] with your entrance type, environment and quantity, and we will respond with suitable options.
