Assa Wireless Access Control Card Reader Examined 2014

By: Brian Rhodes, Published on Apr 24, 2014

Most card readers are hardwired to a controller, but not this unit. It claims to be as easy to install as a sticker. Even better: they say it works with almost every credential type out there. So what are the downsides? Are wireless readers the next big thing in access? 

We examine the Securitron R100 reader's features, prices, and competitive strengths and weaknesses compared to traditional wired readers.

R100 Explained

The Securitron R100 reader has a feature most do not have: it requires no power or connectivity cabling. For certain openings, like the glass doors shown below, hiding wires and even drilling holes for mounting screws is a huge installation issue with no easy solution. 

For the R100, the reader sticks to any surface with adhesive, the internal batteries provide power, and it is wirelessly connected to controllers.

Key Features

125 kHz & 13.56 MHz Models: The low frequency model supports legacy contactless credentials like Prox II or EM Prox, while the high frequency model supports iCLASS, ISO14443 Part B cards, MiFARE/MiFARE Plus, DESFire, and even NFC.

Encrypted: While credential information essentially is the key to unlock doors, the unit uses AES128 bit encryption between reader and receiver. Despite InfoSec Experts like Bruce Schneier claiming theoretical cracks of the encryption, practical examples are almost nonexistent and would take more time than common criminals are willing to spend when other methods of entry are likely easier.

50' (15m) Range: The unit claims a modest 50' range which the company claims is strong enough to pass through two walls. Given that most controllers are located within 15' of the door, this range is likely sufficient for most applications.

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Low Battery/Tamper Alert: Because the reader is dependent on battery power, when the cell runs low it sends a signal the companion receiver. The hub is wired to send 'low battery' status to the parent access system using the tamper input or auxiliary contact. The back of the reader also contains an optical tamper switch that alarms in the same way if knocked off the mounting surface.

Two Components: The R100 is factory paired with an Aperio wireless receiver hub. The hub is wired to the controller like a reader, and uses Wiegand protocol, so it essentially is wired like a typical reader. This schematic shows typical installation:

Not 802.11: While the term 'wireless' is frequently used to mean 802.11/b/g/n, the R100 uses a different protocol defined by 802.14.5, which is similar to the common ZigBee 2.4 GHz protocol popular for home automation products. 


Either reader (low/high frequency) is available at a list price of $700 USD.  However, street pricing is ~$500 and is available through distribution.


While wireless offers advantages for tough installs, like glass doors or tilt-up concrete panel construction, the unit does have downsides:

  • Costly: At $500, the R100 is considerable more expensive than similar wired alternatives. Considering offsets like the HID R10 cost ~$100, installers are paying a premium that is more costly that what they save by avoiding traditional cabled readers. 
  • Not Waterproof: A potential showstopper is the lack of weather rating for the reader. While rated for temperature extremes (40 to +122F [-40 to +50C]), the unit must be installed where it cannot be contacted by water. This limits outdoor use to locations protected by an enclosure or overhand that could potentially add additional cost no needed by a weatherized model.
  • Battery Powered: The  sending unit uses a common coin cell 3V CR2 Lithium battery. While the company claims over 35,000 cycles with normal use, this could actually be only about a year for doors opened 8 - 12 times per hour during normal business hours. The maintenance cost of extra batteries and the labor to replace them will be more than the typical wired reader.


If two or three installation hours are needed to hang a wired reader (that typically installs in an hour or less), or the controlled opening is glass, marble, or stone, the R100 is potentially a good fit.  However, traditional wired readers are less expensive and typically require minimal maintenance once installed, a claim the wireless unit cannot make.

1 report cite this report:

Assa Aperio Wireless Access Reader R100 Tested on Aug 23, 2018
Wireless access control is frequently promoted by manufacturers as a way to cut installation costs. Perhaps the biggest proponent of this is mega...
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