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Fax: 305-696-0461 E-Mail: LAOrnamental@aol.com

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Select Engineered Systems CATDR4 Access Control - SES CATDR4 CAT Expansion Modules

Select Engineered Systems CATDR4 Access Control - SES CATDR4 CAT Expansion Modules

SES CATDR4 Features:

• The CATDR4 works with any CAT and provides four wiegand inputs for card readers, keypads or long range proximity. Includes all of the necessary relays to control up to four entrances.
• Each CATDR4 is controlled by the CAT and is connected via RS485.
• Three CATDR4 may be added to any CAT and the last expansion module can be 4,000 feet away.
• Each CATDR4 is “opto isolated” from all other expansion modules and the CAT providing additional surge suppression and isolation of any surge damage.
• CATDR4 and CATRLY8 may both be added to any CAT.

 Spec Sheet


Regular Price: $1,195.00
Our Price: $808.88



• CATDR4 is a four reader expansion module that will
interface with any CAT.
• CATDR4 is supplied with a 18 VAC 40VA transformer.
• Up to 3 CATDR4 expansion modules may be added to any
• The CATDR4 is opto Isolated (electrically isolated) from any
other expansion module(s) and the CAT.
• The CATDR4 provides 4 wiegand reader / keypad inputs.
• The CATDR4 provides door sense input, REX (request to
exit) input, door shunt output and door release output for
each of the 4 entrances. (relay output is 24V AC/DC @ 3
• The CATDR4 (maximum 3) may be used with the
CATRLY8 (maximum 32) on any CAT expansion.
• The CATDR4 is programmed via the CAT using Selcom


• Dimensions: 11'” W x 11” H x 3 1/2” D
• Material Used: 16 gauge steel, weather resistant
enclosure available, order part #OPTRSTWRH.
• Finish: Painted
• Power Input: 18 VAC, 40 VA UL listed transformer
(provided with unit).
• Emergency Battery: Optional 12V .7 AHR GEL
CELL on constant charge (for control of line voltage
• Mounting: Surface, flush or pedestal mount.
• Shipping Weight: Approx. 15 lbs.
• Operating Environment: Temp.: -20º to 40º C;
(CATV temp.: 0º to 40º C) Relative humidity: 5% to
95% non-condensing.
• Relay Output: Form C dry contact 24V @ 3AMP.

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