LD20/SP20 Industrial Flange Connector
SP21 Connector for Access Control and Security Terminals
The SP21 connector is engineered for reliable performance in security monitoring applications. Its robust construction and waterproof design support long-term operation in both indoor and outdoor environments, making it a practical choice for access control systems, CCTV cameras, and security terminals.

Durable & Waterproof Construction
With a rugged PC/PA66 housing and IP67 protection, this connector is built to withstand dust, water, and harsh environmental conditions. The housing material and sealing design help maintain stable performance in installations where moisture or particulate exposure is a concern.
Selection Considerations for Security Applications
When selecting the SP21 connector for a security project, evaluate the following factors to ensure a proper match:
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Pin count and gender: Available in 2 to 12 pins, with male or female configurations, to match your device interface.
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Contact material: Brass contacts plated with gold support reliable signal transmission for monitoring equipment.
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Environmental rating: IP67 protection suits outdoor or washdown areas, but confirm the mated condition requirement for your installation.
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Mounting and cable preparation: Verify the cable diameter and termination method against your field wiring setup before ordering.
Installation and Integration Guidance
The SP21 connector is designed for quick plug-and-play installation, reducing downtime during setup or maintenance. For access control keypads, card readers, and door entry points, confirm the connector's pin layout matches the device's input/output requirements. For CCTV cameras and alarm panels, verify the cable entry direction and available space at the mounting point to avoid strain on the connection.
Suitable and Unsuitable Use Cases
The SP21 connector is well suited for fixed security equipment where a waterproof, dust-resistant connection is required. It is less suitable for applications involving continuous flexing, high-vibration machinery, or environments with extreme temperature fluctuations beyond the rated range. For conveyor systems or heavy industrial equipment, confirm the mechanical load and vibration levels with your engineering team before specifying this connector.
Application Scope in Security Monitoring
Typical deployments for the SP21 connector include:
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Access control systems: Keypads, card readers, and door entry points.
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CCTV cameras: Indoor and outdoor surveillance setups.
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Security terminals: Alarm panels, smart monitoring devices, and control hubs.
Information to Include in Your Inquiry
To receive an accurate quotation and configuration recommendation, please provide the following details when contacting us:
- Required pin count and gender (male or female).
- Cable outer diameter and conductor size.
- Mounting style (panel mount, cable mount, or other).
- Operating environment (indoor, outdoor, temperature range).
- Any specific housing color or marking requirements.
For related flange connector options, see the LD20/SP20 Industrial Flange Connector. For guidance on plugging life requirements in access control card readers, refer to this FAQ on connector durability.
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