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Cr1 Ds1 00


The CR1-DS1 reader has split transmit and receive functions to enable direction sensing. The CR1-DS1 reader utilises a single external loop aerial and a minimum of two strategically placed receiver pods to enable direction sensing at ranges of up to 3 metres.

The CR1-DS1 is used in preference to the CR1-DS in noisy environments, or where adequate loop separation is impossible. It is compatible with all Census tags®. The radio-frequency communications are scrambled to provide high integrity detection and prevent simulated tokens from being used.

The product is suitable for numerous applications, they include but are not limited to:

  • Direction Sensing
  • Time and Attendance
  • Hands Free Access Control
  • Personnel Identification
  • Article Identification.


Access Control

Convenient touch free technology to easily manage access to your locations.

Car Parking

Create an intelligent parking system where the entry and exit of cars are monitored, with vehicle or driver identification, or both.


Automatic staff registration for safety roll call or attendance registration through real-time alerts and accurate location information.

Article Tagging

Hands free tagging allowing complete hands-free access control, monitoring the whereabouts of assets.

Key Tagging

Safety tracking and key security with non-contact reading up to 3 metres to avoid key compromises.

Technical Specification

The CR1-DS1 reader interrogates the detection zone of each pod in turn for the presence of tags (i.e. multiplexing). A tag moving from one receiver pod detection zone to another will indicate the direction of travel. The speed of reading tags is effectively halved by this mechanism.

The CR1-DS1 reader can be used with a single receiver pod as an enhanced CR1 reader in those circumstances where the CR1 (with external loop) must be installed where there are significant and unavoidable noise signals. The geometric positioning of the pod can minimise noise pickup. The unit can also be used to change the shape of the detection zone.

The receiver pods for CR1-DS1 are SL4 (internal use) and SL5 (outdoor use).

All CR1 readers provide Wiegand or Clock & Data, as well as RS232 output. Advanced features include local alarm outputs, print options, and an optional counter display (See IDN1, EDN1 for further information).

Specification Details SL4 SL5
Power requirements 12-26 Volts @ 500mA    
Dimensions 300 x 230 x 80mm 185 x 20 tube
Weight 1.4kg 450g
Temperature range -20 to +60°C (non condensing) -20 to +60°C
(non condensing)
Housing Charcoal Grey ABS case White Plastic
LED function RED internally/externally controlled
AMBER internally/externally controlled
GREEN internally/externally controlled
Noise indication, Data Sent Indication
Relays 2 x internally controlled relays    
Output Formats 2 x Wiegand or Clock & Data & RS232    
Terminations 2.5mm removable connectors    

Trusted Supplier of RFID products since 1982

Identec Limited consistently supply radio frequency identification access control and electronic identification products that meet or exceed the requirements and expectations of our customers. We also offer a one year no quibble guarantee, and pride ourselves in our excellent after-sales customer service.

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British Touring Cars Championship sponsorship

We are once again proudly sponsoring Ronan Pearson, a dynamic and promising motor racing driver in the Kwik Fit British Touring Car Championship (BTCC) for the upcoming 2024 season.

British Touring Cars Championship sponsorship