HID® Signo™ Readers Models: 20, 40, 20K, 40K

HID® Signo™ Readers Models: 20, 40, 20K, 40K

'Ready For The Future Now'

HID Signo™ is the signature line of physical access control readers from HID Global. The versatility, performance and connected capabilities of HID Signo readers set a new industry benchmark for the most highly adaptable, interoperable and secure approach to electronic access control.

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Product Features & Benefits

Highly Versatile

Support for the widest range of credential technologies, including HID Mobile Access® via native Bluetooth and Near Field Communication (NFC).

Unparalleled Performance 

Ultra secure storage of cryptographic keys on certified secure element hardware, plus a new surface detection feature that enables the reader to automatically re-calibrate and optimise read range performance.

Connected to the Future

All readers include out-of-the-box support for Open Supervised Device Protocol (OSDP) for secure bidirectional communication.

Offering an unparalleled breadth of functionality, HID Signo affords security system installers and administrators a simple and effective approach to secure access control for almost any scenario.

With support for the widest array of credential technologies — past, present and future — HID Signo is the perfect choice for those looking to make the transition to a secure authentication technology.

HID Signo readers transcend the traditional approach to security by being designed to be connected and managed remotely without needing to physically touch each device. This functionality empowers access control systems to dynamically respond as new needs, configurations or threats arise.


Powerfully Secure

  • Multi-Layered security to ensure data authenticity and privacy
  • EAL5+ Certified Secure Element Hardware
  • Native OSDP secure channel capability
  • Trusted secure authentication using the SIO data model
  • Supports iCLASS Elite™ and Corporate 1000 Programs

Meet Every Need, Adapt To Any Situation

  • Go mobile with native Bluetooth and NFC support
  • Integrated 125 kHz credential read support for easy migration
  • Supports over 15 common credential technologies
  • Flush mount terminal block and pigtail wiring options
  • Robust outdoor performance with an IP65 rating

Manage, Upgrade And Configure

  • Easily and securely managed using HID Reader Manager®
  • Configure via a mobile device or OSDP
  • Update firmware in response to threats
  • Personalise by configuring audio visual or keypad settings
  • Deactivate legacy credential technology to conclude secure migration


HID Signo Reader Model





2.4 GHz (Bluetooth) Credential Compatibility

Mobile Credentials powered by Seos® (HID Mobile Access)

13.56 MHz (NFC) Credential Compatibility

Seos, iCLASS SE®, iCLASS SR®, iCLASS®, MIFARE Classic, MIFARE DESFire EV1/EV2, FeliCa™ & Contactless e-Purse Application Specification (CEPAS),  

Mobile Credentials powered by Seos (HID Mobile Access)

125 kHz Credential Compatibility

HID Proximity®, Indala® Proximity, AWID Proximity, and EM Proximity

Typical Read Range (Note 1)

Seos®, MIFARE Classic, MIFARE DESFire EV1/EV2 & ISO14443A Single Technology Cards – 4 to 10 cm

HID / AWID Proximity®, Indala Proximity®, EM Proximity & 125 kHz Single Technology Cards – 6 to 10 cm


Suited for mullion-mount door installations or any flat surface mounting

Suited to mount and cover single gang switch boxes with a slotted mounting plate for alternate back-box spacing


Black bezel with silver trim baseplate (Note 2)



Yes (2 x 6 layout)


Yes (3 x 4 layout)


(width x length x depth)

45 mm x 121.5 mm x 19.5 mm

45 mm x 121.5 mm x 21.5 mm

80 mm x 121.5 mm x 19.5 mm

80 mm x 121.5 mm x 21.5 mm

Product Weight


95 g


 75 g

Pigtail:  110 g


90 g


140 g


120 g

Pigtail: 160 g

Terminal: 140 g

Operating Voltage

12V DC

Current Draw (Note 3)

NSC (Note 4): 60 mA

Peak: 250 mA

Max. Avg: 70 mA

IPM (Note 5): 45 mA

NSC (Note 4): 65 mA

Peak: 250 mA

Max. Avg: 75 mA

IPM (Note 5): 48 mA

NSC (Note 4): 65 mA

Peak: 250 mA

Max. Avg: 75 mA

IPM (Note 5): 45 mA

NSC (Note 4): 70 mA

Peak: 250 mA

Max. Avg: 80 mA

IPM (Note 5): 55 mA

Device Input and Output

Input: Tri-colour LED, Buzzer, Hold @ Active Low

Output: Tamper Relay 0-60V DC @ 100mA Max (Dry Contact)

Operating Temperature & Humidity

 -35° C to +66° C

0% to 95% non-condensing

Storage Temperature

 -40° C to +85° C

Environmental Rating

UL294 Outdoor and Indoor rated, IP65

Transmit Frequency

125 kHz, 13.56 MHz, and 2.4 GHz

Communications & Panel Connection

Wiegand, Clock-and-Data and RS-485 Half Duplex (OSDP)

via Pigtail (0.5 m) or Terminal Strip

Device Management

HID Reader Manager / OSDP configuration


UL294/cUL (US), FCC (US), IC (Canada), CE (EU), RCM (Australia, New Zealand), SRRC (China),

KCC (Korea), NCC (Taiwan), iDA (Singapore), RoHS, MIC (Japan), GreenCircle, Bluetooth SIG,

and additional regions.


Security Ratings

EAL 5+ Certified Secure Element Hardware

Housing Materials

Polycarbonate – UL94 V0

 1 Read range listed is statistical mean rounded to nearest centimetre increment for ID-1 or clamshell credentials. HID Global testing occurs in open air. Form factor, technology and environmental conditions, including metallic mounting surface, can degrade read range performance; plastic spacers are recommended to improve performance on metallic mounting surfaces
 2 Black trim baseplate & reader spacers available as an additional accessory at an additional cost.  
 3 Measured in accordance with UL294 standards; see Installation Guide for details 
 4 NSC – Normal Standby Current; see Installation Guide for details. 
 5 Intelligent Power Management (IPM) – Reduces reader current consumption up to 43%, based on model, compared to standard operating mode.