UK Contact Numbers
Southern : 01245 428 510
Northern : 0141 582 1275

Get Acrobat Reader !

The datasheets available for download from this page are supplied as Adobe Acrobat Portable Document Format (.pdf). Click to download the Free Reader from the Adobe web site.

Get Adobe Reader

Please Note

Whilst every effort has been made to ensure the accuracy of our data sheets at the time of publication, we reserve the right to supply equipment in line with current design specifications and recommend that critical parameters are checked at the order stage.


helping to keep communities safer

Access Control

Access Control - AR-721U Proximity Reader

The AR-721U can be used in many different applications. One of its main uses is as an external reader connected to an internal Controller/Reader such as the AR-727H to provide Entry and Exit control of a door with anti-passback. This configuration can be used in a standalone format or as part of a larger network connected to a Master Controller AR-716E. If the AR-721U is being used as an Entry reader with exit control being exercised by an Exit button, it can be used with a remotely located Controller/Reader AR-727H acting as a Master Controller. Although the AR-721U has operated successfully on cable runs in excess of 30metres, if difficulties are experienced, it is recommended that a Wiegand repeater AR-WGREP is fitted at 10metre intervals in the cable run. However, for all long cable runs, it is safer to use an RS485 link instead of Wiegand. In such cases, the Controllers AR-727HB-RAY or AR-716E should be used with the RS485 Readers AR-737H (which looks identical to the AR-737U) or the versatile AR-737HB-RAY, which is also available in a surface or flush mounting stainless steel format.

  • Wiegand Reader for Card or Token.
  • Compact Size 80x43x17mm.
  • Reading Range 3-8cm.

# 7213 : Mod 17/03/17