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Selecting the appropriate SPDT-1NO-1NC motion-actuated switch is crucial for optimizing automation, enhancing safety, and improving energy efficiency in your electrical systems. These versatile devices offer precise control and reliability, making the right choice essential for seamless integration and long-term performance across diverse residential and commercial settings. A well-chosen switch ensures your installations function as intended, providing both convenience and peace of mind.
Rating: Ui: 380V Ith:15A. And the contact type is SPDT NO+NC
Applicable to AC DC control circuits.Reliable for years
High precision design, use easily.Designed to control the movement of a mechanical part.
IP 40 Protection Degree. Which means this switch is available to tools & small wires (>1mm)
Widly used in appliance, elctronic equipment, automatic machine, communication equipment, car electric, apparatus and instrument, electro motion tool etc...
【FLEXIBLE 360° COIL SPRING ACTUATOR】 High-sensitivity coil spring plunger can be actuated from any direction (360°), making it ideal for applications where the moving part's direction is inconsistent or requires a flexible contact point to prevent...
【IP67 WATERPROOF AND DUSTPROOF SEAL】 Built with a rugged, fully sealed structure reaching IP67 protection standards, this switch operates reliably in harsh environments by resisting water, oil, and dust for both indoor and outdoor industrial use
【RELIABLE MOMENTARY SPDT CONTACTS】 Equipped with 1NO (Normally Open) + 1NC (Normally Closed) contacts, this momentary action SPDT switch supports AC-15 (5A/250VAC) and DC-12 (5A/30VDC) for stable performance in control circuits
【EXTENDED 3-METER PRE-WIRED CABLE】 Comes with a high-quality 3-meter (9.8ft) pre-installed cable which significantly reduces installation time and costs while allowing for flexible mounting in large-scale equipment or hard-to-reach industrial areas
【COMPACT DESIGN AND EASY INSTALLATION】 Compact switch body (65x38x16mm) allows for installation in tight spaces with a standard 25mm (1") mounting hole distance, perfect for CNC machines, packaging equipment, conveyors, and automated production lines
Automotive electronics: As a circuit safety control component, it ensures precise triggering and protection of vehicle electronic systems. Communication and testing equipment: It achieves precise circuit on/off control in communication base stations and...
Home appliances and small electronics: It is compatible with home appliances such as audio systems, microwave ovens, and rice cookers, as well as small devices like toys, providing safe and reliable limit switch triggering functionality.
Featuring a DIY-friendly quick-replace solution, the overall design prioritizes user-centric principles. The installation process is simple and intuitive, requiring no specialized technical background—even ordinary DIY enthusiasts can easily handle it.
When the device's original limit switch malfunctions, replacement can be completed swiftly without relying on complex tools or professional technicians. This significantly reduces equipment downtime, effectively lowering maintenance costs for businesses...
The thoughtful 10-piece per box packaging accommodates bulk installation needs while also serving as a convenient spare parts inventory. This prevents prolonged equipment downtime due to sudden limit switch failures, ensuring long-term stable operation.
【Precision Rotary Actuation】 Features a high-sensitivity standard roller lever arm with momentary snap action; perfectly engineered for pallet detection on logistics conveyors and accurate position monitoring in automated systems
【Heavy-Duty Industrial Build】 Constructed with a rugged zinc alloy and aluminum die-cast enclosure, providing superior structural integrity and shielding internal components from high-impact mechanical damage
【Superior IP66 Waterproof Seal】 Rated at IP66 for excellent resistance against dust, industrial oils, and powerful water jets; ensures stable performance in harsh factory environments and wet plant conditions
【Reliable SPDT Control Logic】Equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) contacts (Ith: 10A) featuring silver contacts for high-repeatability switching in CNC machines, elevators, and safety interlocks
【Standard Mounting & Easy Setup】Designed with a universal mounting footprint and comes complete with a professional cable gland; ensures quick, liquid-tight installation for terminal limit and end-of-travel sensing
Rating: Ui: 380V Ith:10A. And the contact type is SPDT NO+NC
Applicable to AC DC control circuits.Reliable for years
High precision design, use easily.Designed to control the movement of a mechanical part.
IP 40 Protection Degree. Which means this switch is available to tools & small wires (>1mm)
Widly used in appliance, elctronic equipment, automatic machine, communication equipment, car electric, apparatus and instrument, electro motion tool etc...
Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best SPDT-1NO-1NC Motion Actuated Switches
Understanding SPDT-1NO-1NC Functionality
SPDT-1NO-1NC refers to a Single Pole, Double Throw switch with one Normally Open (NO) and one Normally Closed (NC) contact. This configuration means the switch has a common terminal that connects to either the NO or NC terminal. When motion is detected, the common terminal switches its connection, typically from NC to NO, or vice-versa depending on the specific design. This dual-contact setup provides exceptional versatility, allowing the device to either activate a circuit (NO) or deactivate a circuit (NC) upon sensing movement, or even control two separate circuits simultaneously with opposing actions. Understanding this core functionality is vital for integrating these switches into complex control systems.
Key Features to Consider
Detection Technology: Motion-actuated switches primarily use Passive Infrared (PIR) or Microwave (MW) technology. PIR detectors sense heat changes, ideal for human presence, while MW detectors emit radio waves and detect reflections, useful for detecting movement through non-metallic objects.
Detection Range and Angle: Evaluate the area the switch needs to cover. Different models offer varying detection ranges (e.g., 20ft to 70ft) and angles (e.g., 180° to 360°). Ensure the coverage matches your application's requirements to avoid blind spots or false triggers.
Power Rating and Load Capacity: Check the voltage and amperage ratings to ensure compatibility with your intended load (e.g., lighting, fans). Exceeding the switch's maximum load can lead to failure or safety hazards.
Environmental Rating: For outdoor or damp environments, look for IP (Ingress Protection) ratings. Higher IP ratings (e.g., IP44, IP65) indicate better resistance to dust and water, ensuring durability and safe operation in challenging conditions.
Adjustability: Many switches offer adjustable settings for sensitivity, time delay (how long the load stays on after motion stops), and ambient light detection (photocell override) to prevent activation during daylight hours. These features allow for fine-tuning performance.
Application & Installation Considerations
These switches are widely used in various applications, from automating lighting in hallways, closets, and garages to security systems and energy management. For optimal performance, consider the switch's placement carefully. Mount it where it has an unobstructed view of the detection area, avoiding direct sunlight or proximity to heat sources that could cause false triggers. Ensure the mounting height is appropriate for the specified detection range. Wiring should always be performed by a qualified individual, following local electrical codes and the manufacturer's instructions. Proper installation ensures reliable operation and maximizes the energy-saving potential of the device.
Frequently Asked Questions
What does SPDT-1NO-1NC mean in a motion switch?
SPDT stands for Single Pole, Double Throw, indicating one input and two output options. 1NO-1NC signifies one Normally Open and one Normally Closed contact, allowing the switch to control two separate circuits simultaneously with opposing actions upon motion detection. This configuration provides great flexibility for various automation tasks.
What's the difference between PIR and Microwave motion detection?
PIR (Passive Infrared) sensors detect changes in infrared radiation, typically emitted by people or animals, making them ideal for occupancy sensing. Microwave sensors emit radio waves and detect reflections, allowing them to sense movement through some non-metallic barriers, but they can sometimes be more prone to detecting inanimate movement. Each technology has specific use cases where it excels.
Can these switches be used outdoors?
Yes, many motion-actuated switches are designed for outdoor use, but it's crucial to check their IP (Ingress Protection) rating. A higher IP rating, such as IP44 or IP65, indicates better resistance to dust and water, ensuring durability and safe operation in external environments. Always select a model specifically rated for outdoor conditions.
How do I adjust the sensitivity or time delay?
Most motion-actuated switches come with adjustable dials or settings, often located on the unit itself or accessible via a remote control. Sensitivity controls how easily the sensor is triggered, while time delay determines how long the connected load remains active after motion ceases. Refer to your specific model's manual for precise adjustment instructions.
Why might my motion switch be false triggering?
False triggering can occur due to several factors, including improper placement, such as being too close to heat sources like vents or direct sunlight. Strong air currents, pets, or even reflections from shiny surfaces can also cause unintended activations. Adjusting the sensitivity setting or relocating the switch can often resolve these issues.
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