1 LEAP 1L-MSO-101 Reed Switch
1 LEAP 1L-MSO-101L Reed Switch
1 LEAP 1L-MSO-102L Reed Switch
1L-MSM-114OH – Overhead Mount Magnetic Switch
Overhead Mount Reed Switch – Magnetic Switches for Shutters and Overhead Doors
1 LEAP Technologies provide overhead mount magnetic reed switches for detecting the open or closed position of rolling shutters, overhead doors, hatches and other moving equipment. A reed switch closes its electrical contact when a magnet comes close to it. This lets it report the position of a door or shutter to an alarm panel, controller or an automation system without any physical contact between the moving part and the switch.
All models in this category are Normally Open (NO), are fixed in place with screws, and come with an activation magnet. They are used in security and access control, industrial automation, commercial buildings, home alarm systems and vehicles. 1 LEAP Technologies is an ISO 9001:2015 certified manufacturer and dealer of electronic components, including magnetic reed switches, air curtain sensors, occupancy sensors, motion sensors and sirens.
Select a model above to see its product page, or contact our team if you need help choosing.
Overhead Mount Magnetic Switch Models
The overhead mount range includes four models. Each is a Normally Open magnetic reed switch designed to be fitted above or at the top of a door, shutter or opening.
1L-MSM-114OH: Overhead mount magnetic switch, Normally Open Wide Contact Switch for Overhead Shutters and switch mounted on Z Bracket.
1L-MSO-101: Overhead mount magnetic switch, Normally Open Heavy Duty Roller Shutter Contact with Sturdy Polished Aluminium Die-cast Housing.
1L-MSO-101L: Overhead mount magnetic switch, Normally Open Magnet Mounted on adjustable L-Bracket as it is a Heavy Duty Roller Shutter Contact.
1L-MSO-102L: Overhead mount magnetic switch, Normally Open as it Is a 1/4″ Press Fit Mini Switch.
The exact operating gap, dimensions, housing material, cable type and magnet for each model are listed on its product page. Please check the page for your chosen model before ordering.
Specifications Across the Range
The values below are ranges over the overhead mount series. They show what the range covers, but individual models fall at different points within these ranges.
Parameter | Range across the series |
|---|---|
Contact type | Normally Open (NO) |
Switching voltage | Up to 200 V DC |
Switching current | Up to 500 mA |
Switching power | Up to 10 W |
Operating gap | 20 mm to 70 mm, depending on model |
Housing material | ABS or aluminium, depending on model |
Dimensions (L × W × H) | 30–100 mm × 10–25 mm × 5–15 mm, depending on model |
Cable | PVC or stainless steel armoured, 2-core, 7/38 AWM |
Standard cable length | 45 cm to 1 m, customisable |
Operating temperature | −20 °C to +70 °C |
Storage temperature | −40 °C to +85 °C |
Humidity | Up to 95%, non-condensing |
Mounting | Overhead, fixed with screws |
Activation magnet | Included; rare-earth or ceramic, depending on model |
Mechanical life | Over 10 million cycles |
Contact resistance | ≤ 200 mΩ |
Reading the electrical ratings
The voltage, current and power figures are three separate maximums, and a switch must stay within all of them at the same time. Power is voltage multiplied by current, so 200 V at 500 mA would be 100 W, far above the 10 W limit. In practice, if your circuit runs at a higher voltage, the current must be kept low enough to stay within 10 W. Match your circuit’s voltage, current and power to the ratings of your chosen model before you select it. These ratings apply to DC circuits.
How an Overhead Mount Reed Switch Works
A reed switch made up of two thin metal contacts sealed inside a small glass capsule. When a magnet comes within the range, the magnetic field pulls the contacts together and completes the circuit. When the magnet moves away, the contacts separate and the circuit opens again. The switch has no moving mechanical parts outside the sealed capsule, and it needs no physical contact with the door or shutter it monitors.
In an overhead mount installation, the switch is fixed to a stationary point such as a frame, header or bracket. The magnet is fixed to the moving part, such as the bottom bar of a rolling shutter or the top edge of an overhead door. When the door reaches its closed (or open) position, the magnet comes within the switch’s operating gap and the contact changes state. The alarm panel, controller or PLC reads this change and registers the door position.
What “Normally Open” means
Every model in this category is Normally Open (NO). With the magnet away from the switch, the contact is open and no current flows. When the magnet comes within the operating gap, the contact closes and current can flow.
Your alarm panel or controller may expect the opposite behaviour, where the circuit is closed when the door is secure. Many panels can be configured for either input type, but you should confirm this before ordering. If you need a Normally Closed (NC) or NO/NC configuration, please contact us to discuss your requirement so we can suggest you the right reed switch for your application.
How to Choose an Overhead Mount Reed Switch
Choosing the right model comes down to a few practical questions about your application, your circuit and your installation site.
- What are you monitoring?:- Rolling shutters, sectional garage doors, sliding gates, hatches and lift platforms each have different geometry. Consider where the magnet will sit on the moving part and how close it will come to the switch when the door is in position.
- Does the contact type match your system?:- These switches are Normally Open. Check what input type your alarm panel, controller or PLC need do they need NC or NO/NC Configuration.
- Is the electrical load within the ratings?:- Reed switches are designed for low-power signal circuits, such as alarm and control inputs. Confirm that your circuit’s voltage, current and power stay within the model’s ratings. These are shown in the specification table above and on each product page.
- Does the operating gap suit your door?:- The operating gap is the distance at which the magnet will dependably activate the switch. The range across the series is 20 mm to 70 mm, depending on the model. Choose a model whose gap suits the distance between the switch and the magnet at your installation. Allow for normal door movement and any looseness in the door track.
- Is there enough space?:- Dimensions differs by model. If the switch will sit above a door track, inside a frame or in a tight overhead space, check the length, width and height of your chosen model against the space available in your application.
- Which housing and cable suit the site:- Housing is available in ABS Plastic or aluminium, and cable in PVC or stainless-steel armoured versions, depending on the model. Consider how exposed the cable will be to abrasion, impact or movement, and specify the cable length you need.
- What are the site conditions?:- The operating temperature range is −20 °C to +70 °C, and humidity is rated up to 95% non-condensing. If your site is very cold, hot or damp, or involves condensation, check these limits before selecting a model.
- Do you need custom options or larger quantities:- wire lengths can be customised. For bulk orders or OEM requirements, contact us before ordering so we can confirm is it possible to do according to your quantity.
Installation Considerations
Correct installation has a large effect on how reliably a magnetic switch works. Some general points to keep in mind:
- Align the switch and magnet. The magnet should pass close to the switch and stop within the operating gap when the door reaches its position. Test the switch with the door fully open and fully closed before finishing the installation.
- Allow for door movement. Doors and shutters can shift slightly in their tracks. Leave enough margin between the operating gap of the switch and the position of the magnet so that normal movement does not cause false readings.
- Keep magnetic interference in mind. Strong magnets, large steel structures and other magnetic sources close to the switch can affect how it responds. Check the behaviour on site before final fixing.
- Protect the cable. Route the cable away from moving parts and sharp edges. Where it may be exposed to impact or abrasion, an armoured cable option may be more suitable.
- Wire the circuit within the ratings. Connect the switch to a low-power signal circuit that stays within the voltage, current and power ratings of the model.
For installation queries specific to your door or shutter type, contact our team.
Other Mounting Styles
If an overhead mount does not suits your installation, you can also see our other magnetic switch options: Surface Mount Magnetic Switches, Recessed Mount Magnetic Switch, or the full Magnetic Reed Switches range.
Frequently Asked Questions (FAQs)
What is an overhead mount reed switch?
It is a magnetic reed switch designed to be fitted overhead, typically above a door, shutter or opening. A magnet on the moving part closes the switch’s contact when the two are within the operating gap, signalling the position of the door.
Can these switches be used on rolling shutters?
Yes. Rolling shutters and overhead doors are among the main applications for this category. Check the operating gap and dimensions on your chosen model’s product page to make sure it suits your shutter and track.
Are these switches Normally Open or Normally Closed?
All models in this category are Normally Open (NO). The contact is open when the magnet is away and closes when the magnet is within the operating gap. If you need Normally Closed or NO/NC, please contact us.
What operating gap do these switches have?
Across the series, the operating gap ranges from 20 mm to 70 mm, depending on the model. Your chosen model’s product page lists its specific gap.
What voltage and current can they switch?
Over the series, up to 200 V DC, 500 mA and 10 W. These are separate maximums, and your load must stay within all three at once.
Can I choose the cable length?
Standard cable lengths run from 18inch to 1m, and other lengths can be requested. Contact us with your requirement.
What temperature and humidity can they operate in?
The operating temperature range is −20 °C to +70 °C, and humidity is rated up to 95% non-condensing. Storage temperature is −40 °C to +85 °C.
Are these switches waterproof or dust-proof?
The specified humidity rating is non-condensing as these models have IP44. If your site involves water spray, condensation or heavy dust, contact us before selecting a model.
Can they be used for machine safety interlocks?
They can detect whether a guard or hood is closed. If your machine requires a safety-rated device, or compliance with a specific machine-safety standard, please confirm suitability with our team first.
Do they work with AC circuits?
The ratings given are for DC circuits. If your application uses AC, contact us before ordering.
Do you supply bulk or OEM quantities?
Yes. Send us the model, quantity and the customisation you need, such as cable length. minimum order quantity should be 50 pieces we will deliver it to you as soon as possible.
Is 1 LEAP Technologies certified?
Yes. The company is ISO 9001:2015 certified as a manufacturer and dealer of electronic components, including magnetic reed switches, air curtain sensors, occupancy sensors, motion sensors and sirens.
Do You Need Any Help In Selecting a Switch?
Tell us your application, door or shutter type, and the electrical requirements of your panel or controller, and we will help you in finding a suitable model. We also handle bulk orders, custom sizes and cable lengths, and OEM enquiries.
Shop By:- 1L-MSM-114OH , 1L-MSO-101, 1L-MSO-101L, 1L-MSO-102L
