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HID Signo 20 vs HID Signo 40: The Ultimate Guide for UK Access Control Systems
When it comes to modern access control in the UK, choosing the right card reader can significantly impact your building’s security and efficiency. Among the top-performing devices available today, the HID Signo 20 and HID Signo 40 stand out as two of the most advanced, secure, and flexible readers in the HID Global portfolio.
Both are designed to deliver unmatched performance, multi-technology support, and mobile-ready credentials — but which one is right for your organisation? This detailed comparison from XS Controls explains everything you need to know about the HID Signo 20 and HID Signo 40, including installation, features, and real-world use in the UK.
Overview: The Power of HID Signo Readers
The HID Signo Series represents a new era in access control. Built with future-proof architecture, both HID Signo 20 and HID Signo 40 are engineered to deliver high security, seamless integration, and simplified upgrades from legacy systems.
With HID’s open platform, these readers support multiple credential technologies — from traditional 125 kHz prox cards to modern HID Mobile Access, Apple Wallet, and NFC-based credentials. Whether you’re managing a corporate building in London or a research facility in Manchester, the Signo series ensures a consistent, secure, and user-friendly experience.
HID Signo 20: Compact Power for Mullion Installations
The HID Signo 20 is a narrow-profile mullion reader designed for slim door frames, glass partitions, and compact installation areas. Its small size makes it ideal for sites where aesthetics matter just as much as security.
Despite its compact design, it supports the same multi-credential capability as larger models — including SEOS, iCLASS, MIFARE DESFire, and HID Mobile Access. For UK facilities retrofitting older systems, the Signo 20 offers plug-and-play installation with Wiegand and OSDP support, ensuring compatibility with both legacy and advanced controllers.
Key benefits of HID Signo 20:
- Slim design perfect for narrow door frames.
- Multi-technology credential support for flexible migrations.
- Mobile-ready with NFC and Bluetooth Low Energy (BLE).
- Future-proof firmware updates through HID’s secure management tools.
HID Signo 40: Versatile Reader for Wall-Mount Applications
The HID Signo 40 is a standard wall-mount reader designed for high-traffic entry points and main access areas. Its larger profile allows for keypad versions (Signo 40K) that support multi-factor authentication using PIN + card or mobile credentials.
Built for commercial and industrial environments, the HID Signo 40 offers excellent user visibility, intuitive interface feedback (LED ring + beeper), and rugged durability. For UK facilities needing both convenience and enhanced security, this model delivers both.
Key benefits of HID Signo 40:
- Wall-mount design for main entrances and high-traffic zones.
- Optional keypad for PIN-based access control.
- Advanced OSDP secure channel communication.
- Ideal for external doors and perimeter security setups.
Shared Security Architecture
Both the HID Signo 20 and HID Signo 40 include a Secure Element (SE) chip to protect encryption keys and credential data. They use SIO (Secure Identity Object) technology for end-to-end encryption, ensuring data authenticity and privacy.
For UK enterprises concerned about GDPR compliance and data protection, this architecture ensures that all access transactions remain secure and traceable. Whether installed at an office, warehouse, or healthcare facility, both models deliver enterprise-grade security you can trust.
Installation & Integration Made Simple
Installation flexibility is another strength of the Signo series. The HID Signo 20 fits directly onto narrow mullion surfaces, while the HID Signo 40 fits standard electrical backboxes for wall-mounting.
Both readers offer:
- Support for Wiegand, Clock-and-Data, and OSDP v2 protocols.
- Configurable connections for simplified wiring.
- Compatibility with leading controllers and software used across the UK.
Installers also appreciate the HID Reader Manager App, which allows wireless configuration and firmware updates via mobile — reducing maintenance time significantly.
Performance, Durability, and Design
HID Signo readers are known for durability, rated for heavy commercial usage and outdoor performance. The devices offer IK08 impact protection and IP65-rated environmental sealing, depending on the model variant.
In the unpredictable UK weather, these features matter. The HID Signo 40 with weatherproof casing performs reliably at external entrances, while the HID Signo 20 suits sheltered or indoor access points where space is limited.
Choosing Between HID Signo 20 and HID Signo 40
Your decision should depend on your building layout and user interaction requirements:
| Criteria | HID Signo 20 | HID Signo 40 |
|---|---|---|
| Mounting Type | Mullion / narrow frame | Wall-mount / standard backbox |
| Form Factor | Slim, low-profile | Larger, visible design |
| Keypad Option | No | Yes (Signo 40K variant) |
| Ideal For | Glass doors, corridors | Main entrances, external access |
| Integration | Wiegand + OSDP | Wiegand + OSDP |
| Mobile Access | BLE & NFC ready | BLE & NFC ready |
For sleek, minimalist interiors, the HID Signo 20 is the better choice. For visible main entrances requiring keypad access or a robust user interface, opt for the HID Signo 40.
Maintenance and Lifecycle Management
A key advantage of HID Signo readers is simplified lifecycle management. Through HID Origo and the Reader Manager App, administrators can update firmware, monitor performance, and configure devices remotely — a crucial benefit for multi-site deployments in the UK.
Routine maintenance should include:
- Periodic firmware updates for the latest security patches.
- Credential audits to ensure compliance.
- Physical inspections for damage or wear.
Such practices ensure that your HID Signo 20 or HID Signo 40 continues to perform optimally throughout its lifecycle.
Pricing and Availability in the UK
Prices for HID Signo 20 and HID Signo 40 vary based on features, keypad options, and order quantities. On average, UK integrators report pricing from £250–£400 depending on configuration.
XS Controls, an authorised UK supplier, provides end-to-end support including:
- Expert product selection advice.
- Professional installation and system integration.
- Ongoing maintenance and firmware updates.
Before purchasing, verify model compatibility with your controller and review datasheets to ensure proper deployment.
Frequently Asked Questions (FAQs)
Q1: Can HID Signo readers use legacy 125kHz cards?
Yes, both HID Signo 20 and HID Signo 40 support 125kHz Prox credentials along with high-frequency SEOS and iCLASS cards.
Q2: Are these readers compatible with HID Mobile Access?
Absolutely. Both readers are mobile-ready with BLE and NFC for smartphone and Apple Wallet use.
Q3: Do they support OSDP for secure communication?
Yes, OSDP (Open Supervised Device Protocol) ensures encrypted, bi-directional communication for enhanced security.
Final Thoughts
Both the HID Signo 20 and HID Signo 40 embody HID’s vision for secure, connected, and mobile-ready access control. For projects demanding compact elegance, the HID Signo 20 is ideal. For those prioritising keypad entry and visible reader interaction, the HID Signo 40 is unmatched.
At XS Controls, we help UK organizations implement, configure, and maintain HID Signo readers with expert precision — ensuring reliability, scalability, and long-term performance.