NavKar Systems
SH-3WD NO & NC 3 Wires Magnetic Garage Door Contacts Heavy Duty Alarm Switch Sensor for Roller Shutter
SH-3WD NO & NC 3 Wires Magnetic Garage Door Contacts Heavy Duty Alarm Switch Sensor for Roller Shutter
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- Amazon.in price
- Rs. 899
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- Rs. 854
- You save
- Rs. 45 (5% less)
Amazon price checked 28 Oct 2026; Amazon prices change often. All our prices include GST, with the same warranty and free support.
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- 3 wires NO&NC, both with normally open and normally closed type for you choosing
- Over 40mm large operation distance , suitable for most garage door, roller shutter, gate
- Heavy duty high strength metal housing
- For home burglar alarm system, important kits of home security
- 15" stainless steel armoured cable, for good wires protection
NavKar Systems SH-3WD
Specifications
A heavy duty magnetic contact with a metal housing and 15 inch stainless steel armoured cable, with a large gap of over 40 mm. It has 3 wires so you can use it as normally open or normally closed. Buy it for roller shutters, garage doors and gates on a burglar alarm.
| Model | SH-3WD |
|---|---|
| Contact | 3 wires, NO and NC |
| Operating distance | More than 40 mm |
| Housing | Heavy duty, high strength metal |
| Cable | 15 inch stainless steel armoured cable |
| Use | Roller shutters, garage doors, gates, home burglar alarm systems |
Specifications from NavKar Systems' product details for this model. All prices include GST.
Frequently asked questions
What does the 3 wire NO and NC mean?
The sensor has 3 wires so you can choose a normally open or a normally closed connection.
How big a gap does it allow?
The operating distance is more than 40 mm, so it suits most garage doors, roller shutters and gates.
Is the housing strong?
Yes. It has a heavy duty, high strength metal housing.
How long is the cable and is it protected?
The cable is 15 inch (about 380 mm) stainless steel armoured cable, which protects the wires.
Where do I use it?
On roller shutters, garage doors and gates, as part of a home burglar alarm system.
How is it different from the MC-3T?
The SH-3WD is the heavy duty contact for shutters with a gap over 40 mm. The MC-3T is a small plastic reed switch with a 15 to 25 mm sensing distance.
Is this sensor wired or wireless?
It is wired, with 3 wires for NO and NC connection.
What is the gap distance?
It works with a gap of over 40 mm, which suits most garage doors, roller shutters and gates.
